Fix incomplete typehinting for PathLike

[madebylydia]

This adds a more rich type hinting for the git.types.PathLike class.
Closes #1473.

Also remove unused imports in this file.

[madebylydia]

I'm unsure that the check has failed due to the change because I am unable to run flake8 myself for some reasons... Even after rolling back my changes

I'm confused, and might require a hand on how to fix the following...

[Byron]

Thanks for adding bytes, in theory it should now be ready. I myself am not sure what's going on with flake8 except that it's probably buggy in the latest version.

Maybe this PR can be re-run occasionally to see if that fixes it as it should pull the latest version and fixed version of flake at some point.

I also asked @Yobmod for assistance, maybe they have seen this issue before.

[madebylydia]

Hello, please do not merge this PR as it appears the current fix might not be correct. As per the current fix, Pylance/mypy will complain that a str object does not comply with the type hint. I assume it would be the same error raised if I pass a byte object, but complaining it's not a str this time, I assume. I need to investigate and see what else I can do, but this might be tricky.

…

On Mon, Aug 1, 2022, 02:51 Sebastian Thiel ***@***.***> wrote: Thanks for adding bytes, in theory it *should* now be ready. I myself am not sure what's going on with flake8 except that it's probably buggy in the latest version. Maybe this PR can be re-run occasionally to see if that fixes it as it should pull the latest version and fixed version of flake at some point. — Reply to this email directly, view it on GitHub <#1474 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AOSDPZ3QOGJQ3SPPBXZ7INDVW4NSDANCNFSM55FN4VFQ> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[Byron]

Thanks a lot for figuring this out with me!

[madebylydia]

You're welcome!