NOT READY FOR REVIEW : feat: add cargo pkgid support for cargo-script

[Rustin170506]

What does this PR try to resolve?

In this PR, we added the cargo pkgid support for the cargo-script.

For the package itself:

cargo pkgid --manifest-path foo.rs
path+file:///my-project/foo.rs#0.86.0

For its dependence:

cargo pkgid --manifest-path foo.rs -p sqlx
registry+https://github.com/rust-lang/crates.io-index#[email protected]

How should we test and review this PR?

I have updated the unit tests and also added more test cases for it.

Additional information

None

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[epage]

Another test we'll need is that we error when a cargo script is specified as a dependency which might become possible with this change.

[Rustin170506]

Another test we'll need is that we error when a cargo script is specified as a dependency which might become possible with this change.

Do you mean by cargo pkgid --manifest-path foo.rs -p foo?

[epage]

I mean

[package]
name = "foo"

[dependencies]
bar.path = "bar.rs"