feat: Read project dependencies from cargo metadata

[AjithPanneerselvam]

What does this PR offer?

• Read project dependencies from cargo metadata, using crate cargo_metadata.
• It's just a starting point where we are just checking if the override patch is one of the dependencies of the project.

Notes:

To pacify cargo manifest, forced to do the following in the test:

• Used real crate (anyhow) in dependencies.
• Added [[bin]] section in the cargo manifest.

Output:

./cargo-override --path ../anyhow
patch dependency 'anyhow' version requirement: '^1.0.81' found in project dependencies

[eopb]

This is so awesome!

I left some suggestions on some minor things