feat(readrift): optimize initial load

[matthewsong18]

Problem:

Initial load (populating the chapter list) for a novel with 300 chapters took around 21 seconds, which is pretty bad. Mb guys.

Solution:

I originally copied the ToC pagination amount of 10, but by pinging the server, turns out the limit is actually 30. I also made the delay between requests a bit smaller at 150 to 250 ms with a jitter compared to the original 300 ms.

Overall, 64.52% less requests and initial load is around 3 times faster.

• Old: 31 requests finished in 21.25 seconds
• New: 11 requests finished in 6.45 seconds