Add contributer module, alternative to the 20k_club script

[Bahex]

Uses github cli gh to fetch information through the github api to avoid cloning the repositories.

[fdncred]

The 20k club was created when nushell hit 20k stars on github as a way to say thanks to the community and give the most prolific contributors a place of honor in discord. It was meant to count PRs but IIRC it mostly counts commits but since our commits are squashed, it's kind of the same number.

I'm up for replacing the 20k club with something else and reusing the groups in discord but I want to leave the script in place for historical reasons.

I haven't ran your script yet but it seems reasonable by looking at it.

[fdncred]

I finally ran this and I love it. I have a few questions.

1. How can we map the users to discord users?
2. Does this use the traditional git .mailmap file? For instance, I have 5 different usernames and email addresses for sophia.
3. I'm not clear what a "contribution" is that it's counting. Any ideas?
4. The numbers are quite different from my script