[llvm] [workflows] Add post-commit job that periodically runs the clang static analyzer (PR #94106)

[Artem Dergachev via llvm-commits]

https://github.com/haoNoQ approved this pull request.

I don't see any other potential problems, everything makes sense to me and I'm very excited!

https://github.com/llvm/llvm-project/pull/94106