Introduce a Props Bot workflow

[desrosj]

What?

Props Bot is a new GitHub Action that will compile a list of contributors for a given pull request. The bot will leave a comment with a list of contributors formatted for use in both Trac SVN and GitHub.

It was built and maintained on GitHub in the WordPress/props-bot-action repository with the aim of helping committers and maintainers collect props for a given change.

Why?

Currently, only the contributors making code commits are properly credited in GitHub for their contribution. Props Bot will change all that.

How?

Props Bot generates a list of Co-authored-by trailers for all contributors who participated on a PR.

[gziolo]

Let's get this party started! 🎉

[github-actions]

The following accounts have interacted with this PR and/or linked issues. I will continue to update these lists as activity occurs. You can also manually ask me to refresh this list by adding the props-bot label.

Core SVN

If you're a Core Committer, use this list when committing to wordpress-develop in SVN:

Props: desrosj, gziolo, mamaduka.

GitHub Merge commits

If you're merging code through a pull request on GitHub, copy and paste the following into the bottom of the merge commit message.

Co-authored-by: desrosj <desrosj@git.wordpress.org>
Co-authored-by: gziolo <gziolo@git.wordpress.org>
Co-authored-by: Mamaduka <mamaduka@git.wordpress.org>

To understand the WordPress project's expectations around crediting contributors, please review the Contributor Attribution page in the Core Handbook.

[gziolo]

The integration comments on closed/merged PRs. See #57608 (comment). It isn’t a big issue but it could save some resources if the hot would only interact with open PRs, also excluding drafts if not yet covered.

[Mamaduka]

@gziolo, I was about to report the same.