Allow directly entering GitHub personal access token.

[zhongliang02]

Thank you Erik for this fantastic app, it's exactly what I've been looking for.

However, the requested OAuth scope for Github login is too broad for my organisation.

What I found is a workaround, where if I make the authentication field editable in the "Add GitHub Actions workflow" dialog, I can put in a fine-grained PAT with the appropriate permissions (Actions read-only + Contents read-only), I am able to monitor workflows without having to authorize the repo scope.

I've tested it with my org's repos and it works fine.

However, I will caveat that the code here is written with AI, and while I read through every line of change, I am not personally familiar with Swift, so if there's a better way to do it, let me know.

Related to discussion #8

[erikdoe]

Thanks for finding this out. In the GitHub panel, though, I didn't want to make the token field editable. So, I've implemented a similar solution here 3e7b670. Have a look and let me know if that works for you, too.

[zhongliang02]

Thank you!

[zhongliang02]

will you make a new release?