Co-authorship

[MiPnamic]

Taken from https://docs.github.com/en/pull-requests/committing-changes-to-your-project/creating-and-editing-commits/creating-a-commit-with-multiple-authors

Example:
$ git commit -m "Refactor usability tests.

Co-authored-by: NAME NAME@EXAMPLE.COM
Co-authored-by: ANOTHER-NAME ANOTHER-NAME@EXAMPLE.COM"

This means analyze the commit message looking for the "author name" into the Co-authored-by lines.

[MiPnamic]

Consider adding a specific repo option to #3

a simple boolean that lets the cli understand that into that repo you are "also" co-authored