While working on a PR, I noticed that the pgAdmin repository doesn't have a CONTRIBUTING.md file.
I think having one could make it easier for new contributors to work with the codebase. Things like how to set up the project, coding guidelines, testing requirements, commit/PR conventions, and other common contributor questions could all live in here instead of people having to figure them out from different docs and PRs.
If the maintainers think this would be useful, I would be be happy to put together an initial draft and open a PR.
Much of that info is in the existing README. We'd be more than happy to see that improved though, including breaking out relevent parts into a CONTRIBUTING.md doc.
