Make simd-json more Rust idiomatic

[Ygg01]

This crate isn't very idiomatic. Sure it does something low level but consider following:

1. stry! macro can be replaced by ? operator. Is there a reason for stry!? Comments mention performances degradation but doing a cargo bench reveals same or +20% performance uplift. See summary below

simd-json without `stry` macro

PS C:\projects\simd-json> cargo bench
   Compiling simd-json v0.18.1 (C:\projects\simd-json)
    Finished `bench` profile [optimized] target(s) in 26.89s                                                                                                       
     Running benches\parse.rs (target\release\deps\parse-4ec45711d4f26869.exe)
Gnuplot not found, using plotters backend
apache_builds/simd_json::to_borrowed_value
                        time:   [175.15 µs 175.66 µs 176.24 µs]
                        thrpt:  [712.62 MiB/s 714.98 MiB/s 717.07 MiB/s]
                 change:
                        time:   [−1.4873% −0.6701% +0.0096%] (p = 0.09 > 0.05)
                        thrpt:  [−0.0096% +0.6746% +1.5098%]
                        No change in performance detected.
Found 5 outliers among 100 measurements (5.00%)
  3 (3.00%) high mild
  2 (2.00%) high severe
apache_builds/simd_json::to_borrowed_value_with_buffers
                        time:   [175.21 µs 175.57 µs 175.98 µs]
                        thrpt:  [713.70 MiB/s 715.35 MiB/s 716.81 MiB/s]
                 change:
                        time:   [+0.7279% +1.2116% +1.6842%] (p = 0.00 < 0.05)
                        thrpt:  [−1.6563% −1.1971% −0.7227%]
                        Change within noise threshold.
Found 8 outliers among 100 measurements (8.00%)
  5 (5.00%) high mild
  3 (3.00%) high severe
apache_builds/simd_json::to_owned_value
                        time:   [273.39 µs 275.07 µs 276.53 µs]
                        thrpt:  [454.17 MiB/s 456.59 MiB/s 459.39 MiB/s]
                 change:
                        time:   [−0.0069% +0.9300% +1.7901%] (p = 0.03 < 0.05)
                        thrpt:  [−1.7586% −0.9214% +0.0069%]
                        Change within noise threshold.

event_stacktrace_10kb/simd_json::to_borrowed_value
                        time:   [3.3200 µs 3.3392 µs 3.3594 µs]
                        thrpt:  [2.7521 GiB/s 2.7687 GiB/s 2.7848 GiB/s]
                 change:
                        time:   [−10.636% −6.7627% −3.3357%] (p = 0.00 < 0.05)
                        thrpt:  [+3.4508% +7.2532% +11.902%]
                        Performance has improved.
Found 3 outliers among 100 measurements (3.00%)
  2 (2.00%) high mild
  1 (1.00%) high severe
event_stacktrace_10kb/simd_json::to_borrowed_value_with_buffers
                        time:   [2.9360 µs 2.9481 µs 2.9604 µs]
                        thrpt:  [3.1230 GiB/s 3.1360 GiB/s 3.1489 GiB/s]
                 change:
                        time:   [−24.095% −17.963% −12.200%] (p = 0.00 < 0.05)
                        thrpt:  [+13.895% +21.896% +31.744%]
                        Performance has improved.
Found 16 outliers among 100 measurements (16.00%)
  14 (14.00%) low mild
  1 (1.00%) high mild
  1 (1.00%) high severe
event_stacktrace_10kb/simd_json::to_owned_value
                        time:   [5.0036 µs 5.0383 µs 5.0736 µs]
                        thrpt:  [1.8222 GiB/s 1.8350 GiB/s 1.8477 GiB/s]
                 change:
                        time:   [−18.813% −13.410% −8.3508%] (p = 0.00 < 0.05)
                        thrpt:  [+9.1117% +15.487% +23.172%]
                        Performance has improved.

github_events/simd_json::to_borrowed_value
                        time:   [67.730 µs 67.953 µs 68.169 µs]
                        thrpt:  [930.63 MiB/s 933.59 MiB/s 936.66 MiB/s]
                 change:
                        time:   [−30.311% −22.011% −14.111%] (p = 0.00 < 0.05)
                        thrpt:  [+16.429% +28.223% +43.494%]
                        Performance has improved.
github_events/simd_json::to_borrowed_value_with_buffers
                        time:   [65.195 µs 65.798 µs 66.820 µs]
                        thrpt:  [949.42 MiB/s 964.16 MiB/s 973.08 MiB/s]
                 change:
                        time:   [−20.752% −15.558% −10.505%] (p = 0.00 < 0.05)
                        thrpt:  [+11.738% +18.424% +26.186%]
                        Performance has improved.
Found 4 outliers among 100 measurements (4.00%)
  2 (2.00%) high mild
  2 (2.00%) high severe
github_events/simd_json::to_owned_value
                        time:   [119.14 µs 120.18 µs 121.10 µs]
                        thrpt:  [523.85 MiB/s 527.90 MiB/s 532.49 MiB/s]
                 change:
                        time:   [−23.570% −17.778% −11.969%] (p = 0.00 < 0.05)
                        thrpt:  [+13.596% +21.623% +30.839%]
                        Performance has improved.

canada/simd_json::to_borrowed_value
                        time:   [8.9994 ms 9.1612 ms 9.3312 ms]
                        thrpt:  [230.06 MiB/s 234.33 MiB/s 238.55 MiB/s]
                 change:
                        time:   [−25.894% −19.910% −13.630%] (p = 0.00 < 0.05)
                        thrpt:  [+15.781% +24.859% +34.942%]
                        Performance has improved.
canada/simd_json::to_borrowed_value_with_buffers
                        time:   [8.2364 ms 8.3711 ms 8.5190 ms]
                        thrpt:  [252.00 MiB/s 256.45 MiB/s 260.65 MiB/s]
                 change:
                        time:   [−28.915% −23.370% −17.490%] (p = 0.00 < 0.05)
                        thrpt:  [+21.198% +30.497% +40.677%]
                        Performance has improved.
Found 3 outliers among 100 measurements (3.00%)
  2 (2.00%) high mild
  1 (1.00%) high severe
canada/simd_json::to_owned_value
                        time:   [7.1303 ms 7.2486 ms 7.3748 ms]
                        thrpt:  [291.10 MiB/s 296.17 MiB/s 301.08 MiB/s]
                 change:
                        time:   [−10.879% −4.5599% +0.1846%] (p = 0.14 > 0.05)
                        thrpt:  [−0.1842% +4.7778% +12.207%]
                        No change in performance detected.
Found 5 outliers among 100 measurements (5.00%)
  5 (5.00%) high mild
#

citm_catalog/simd_json::to_borrowed_value
                        time:   [3.0979 ms 3.1469 ms 3.1964 ms]
                        thrpt:  [530.39 MiB/s 538.72 MiB/s 547.25 MiB/s]
                 change:
                        time:   [−0.5444% +1.9231% +4.4387%] (p = 0.13 > 0.05)
                        thrpt:  [−4.2500% −1.8868% +0.5474%]
                        No change in performance detected.
Found 3 outliers among 100 measurements (3.00%)
  3 (3.00%) high mild
citm_catalog/simd_json::to_borrowed_value_with_buffers
                        time:   [2.7820 ms 2.8159 ms 2.8507 ms]
                        thrpt:  [594.71 MiB/s 602.05 MiB/s 609.38 MiB/s]
                 change:
                        time:   [−1.6340% +1.2378% +4.3310%] (p = 0.44 > 0.05)
                        thrpt:  [−4.1512% −1.2227% +1.6611%]
                        No change in performance detected.
Found 4 outliers among 100 measurements (4.00%)
  2 (2.00%) high mild
  2 (2.00%) high severe
Benchmarking citm_catalog/simd_json::to_owned_value: Warming up for 1.0000 s
Warning: Unable to complete 100 samples in 20.0s. You may wish to increase target time to 24.6s, enable flat sampling, or reduce sample count to 60.
citm_catalog/simd_json::to_owned_value
                        time:   [3.2175 ms 3.2804 ms 3.3457 ms]
                        thrpt:  [506.71 MiB/s 516.81 MiB/s 526.91 MiB/s]
                 change:
                        time:   [−3.6698% −0.9384% +1.8610%] (p = 0.52 > 0.05)
                        thrpt:  [−1.8270% +0.9473% +3.8096%]
                        No change in performance detected.
Found 3 outliers among 100 measurements (3.00%)
  3 (3.00%) high mild

log/simd_json::to_borrowed_value
                        time:   [2.3223 µs 2.3351 µs 2.3499 µs]
                        thrpt:  [883.10 MiB/s 888.68 MiB/s 893.61 MiB/s]
                 change:
                        time:   [−6.3810% −4.2839% −2.5244%] (p = 0.00 < 0.05)
                        thrpt:  [+2.5898% +4.4756% +6.8159%]
                        Performance has improved.
Found 1 outliers among 100 measurements (1.00%)
  1 (1.00%) high mild
log/simd_json::to_borrowed_value_with_buffers
                        time:   [1.9943 µs 2.0026 µs 2.0107 µs]
                        thrpt:  [1.0079 GiB/s 1.0119 GiB/s 1.0162 GiB/s]
                 change:
                        time:   [−14.538% −11.649% −9.5161%] (p = 0.00 < 0.05)
                        thrpt:  [+10.517% +13.185% +17.011%]
                        Performance has improved.
Found 3 outliers among 100 measurements (3.00%)
  2 (2.00%) high mild
  1 (1.00%) high severe
log/simd_json::to_owned_value
                        time:   [5.2520 µs 5.3025 µs 5.3446 µs]
                        thrpt:  [388.28 MiB/s 391.36 MiB/s 395.12 MiB/s]
                 change:
                        time:   [−6.0024% −3.6255% −1.3327%] (p = 0.00 < 0.05)
                        thrpt:  [+1.3507% +3.7619% +6.3857%]
                        Performance has improved.

twitter/simd_json::to_borrowed_value
                        time:   [876.71 µs 890.32 µs 903.97 µs]
                        thrpt:  [682.57 MiB/s 693.04 MiB/s 703.79 MiB/s]
                 change:
                        time:   [−4.0587% −1.7328% +0.6089%] (p = 0.15 > 0.05)
                        thrpt:  [−0.6052% +1.7634% +4.2304%]
                        No change in performance detected.
Found 3 outliers among 100 measurements (3.00%)
  3 (3.00%) high mild
twitter/simd_json::to_borrowed_value_with_buffers
                        time:   [843.01 µs 852.99 µs 863.41 µs]
                        thrpt:  [714.63 MiB/s 723.36 MiB/s 731.93 MiB/s]
                 change:
                        time:   [−4.3779% −2.0909% +0.1324%] (p = 0.07 > 0.05)
                        thrpt:  [−0.1322% +2.1356% +4.5784%]
                        No change in performance detected.
Found 4 outliers among 100 measurements (4.00%)
  1 (1.00%) high mild
  3 (3.00%) high severe
twitter/simd_json::to_owned_value
                        time:   [1.3433 ms 1.3616 ms 1.3808 ms]
                        thrpt:  [446.87 MiB/s 453.17 MiB/s 459.34 MiB/s]
                 change:
                        time:   [−5.0699% −2.4445% +0.0528%] (p = 0.08 > 0.05)
                        thrpt:  [−0.0528% +2.5057% +5.3407%]
                        No change in performance detected.
Found 15 outliers among 100 measurements (15.00%)
  11 (11.00%) low mild
  4 (4.00%) high mild

     Running benches\to_tape.rs (target\release\deps\to_tape-3df585aa6d605f5c.exe)
Gnuplot not found, using plotters backend
WARNING: skipping benchmark 'apache_builds': feature `bench-apache_builds` not enabled (use `--features bench-all`)
WARNING: skipping benchmark 'event_stacktrace_10kb': feature `bench-event_stacktrace_10kb` not enabled (use `--features bench-all`)
WARNING: skipping benchmark 'github_events': feature `bench-github_events` not enabled (use `--features bench-all`)
WARNING: skipping benchmark 'canada': feature `bench-canada` not enabled (use `--features bench-all`)
WARNING: skipping benchmark 'citm_catalog': feature `bench-citm_catalog` not enabled (use `--features bench-all`)
WARNING: skipping benchmark 'log': feature `bench-log` not enabled (use `--features bench-all`)
WARNING: skipping benchmark 'twitter': feature `bench-twitter` not enabled (use `--features bench-all`)

2. No usage of Shift/Add/BitXor to make code easier to grok.
3. Using &[u8; 64] would have speed up code from my experience doing an operation on predetermined array of u8 is faster than [u8]`. Often Rust autovectorizes such code. Needs testing in Godbolt.
4. Lots of usage of fully qualified names (e.g. std::result::Result instead of result), that's not really idiomatic, but maybe sometimes it makes sense if there are two same name struct in namespace.