I've issued a PR that adds a few chatops-style commands to our pull requests.
There are links in there to the issue:
which itself has a few links. Please feel free to chime in there, but I think this could make our development workflow a lot nicer -- we could stop asking people to rebase, for instance, and instead just have it done almost-automatically by a bot. And same for black, isort, etc. I'll also add a help command, now that I'm thinking of it...
Please leave feedback -- if I get some buy-in from folks I'll transfer the slash-command-processor repo to the yt-project org and then we can move forward with it a bit.