Research on GitHub bots we can use for automatically labelling PRs/issues

[refeed]

General Issue

Most of the times, the PR is either waiting review from the maintainer or waiting for the contributor to apply the suggestions. As a maintainer, I have to reopen the PR one by one to see whether it's actually waiting a review from my side or not. It's quite time consuming to do this. I know I can monitor my email box as well, but I think if there's a bot can place labels on PRs, labels like waiting for maintainer review, that would be nice

Additional Information

• Zulip
• Example of the bedevere bot: gh-125873: Improve error message when PYTHONHOME is invalid python/cpython#126027

Possible projects to use:

• https://github.com/probot/probot
• Bedevere-bot of python, (need more research on whether they open sourced it or not)
• https://github.com/facelessuser/label-bot (very close to our use cases)