dev-cmd/contributions: Stats for all maintainers

[issyl0]

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same change?
• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes? Here's an example.
• Have you successfully run brew style with your changes locally?
• Have you successfully run brew typecheck with your changes locally?
• Have you successfully run brew tests with your changes locally?

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• Part of Enhance brew contributions. #13642.
• With brew contributions maintainers, this will output a list of stats (across the specified time period, or all time) for people in the "maintainers" team on GitHub.
• This assumes that their Git committer details are the same as their name is set to on GitHub. There's a TODO here to work out how to do this better.
• Show an error message if trying to generate a CSV for the full maintainer list, since I haven't worked out how to best show all of that info yet (or even how best to show only the totals across everything for every user) in that format.

[BrewTestBot]

Review period will end on 2023-02-21 at 13:19:32 UTC.

[issyl0]

• This assumes that their Git committer details are the same as their name is set to on GitHub. There's a TODO here to work out how to do this better.

We can use the GitHub search API to search commits in a repo for a username, but the search APIs have some quite strict rate limiting I think?

There's also the commits REST API, so that's a better solution with better rate limits: https://docs.github.com/en/rest/commits/commits?apiVersion=2022-11-28#list-commits--parameters.

Also we don't need to tap all the repos if we get the data from GitHub. 🎉 I will figure all this out this week.

[issyl0]

The GitHub commits API doesn't support querying by trailers (Co-authored-by, Signed-off-by) or by committer for the other desired feature, splitting out commit authors and commit committers since they can be different. I've asked if these things will ever be available. Who knows, maybe I'll be able to write it myself!

[MikeMcQuaid]

@issyl0 As a potential hack around this it just occurred to me: almost all of those cases are going to be ones where another maintainer was either the author or committer so: you might be able to do a maintainer-wide query and then filter commit messages after the fact.

[BrewTestBot]

Review period ended.

[issyl0]

I updated this so that just the bare brew contributions gets contributions for all maintainers.

[MikeMcQuaid]

This is great, thanks!

[MikeMcQuaid]

Thanks again @issyl0!