Add `--public` support for `cargo add`

[epage]

Problem

rust-lang/rfcs#3516 calls for controlling the new public field in cargo add

Proposed Solution

Add --public and --no-public flags. This will mirror --optional / --no-optional

Test cases

• Ability to add a new dep that is a public dependency
• Able to turn an existing private dep into a public dep
• Able to turn an existing public dep into a private dep

See the test cases for --optional for patterns in naming, etc.

Notes

The RFC called for --public <bool>. ... I don't remember why I did that. I think it might have been due to some aspects of a previous design of the RFC and I forgot to update it. We can note this in the tracking issue for us to approve this deviation.

[0xPoe]

@rustbot claim

[epage]

@hi-rustin if you are ok handing this off, I think @linyihai was interested in contributing to public-private dependencies and I made this as a starting point for them.

[linyihai]

Never mind, if this issue you are instersted in then i will pick another #13038, it is ok for me :)

[0xPoe]

Oh, I didn't know that. Please feel free to take it.

[0xPoe]

Oh, I didn't know that.

I found it on the zuilp :(

Please take it and give it a shot! Have a nice hacking time!

[linyihai]

@rustbot claim