[llvm] [GitHub] Add workflows to manage merging of PRs from authors without commit access (PR #124910)

[Aiden Grossman via llvm-commits]

boomanaiden154 wrote:

> It should be enough to just add comment asking for someone to commit the PR after it's been reviewed.

This seems to just get us back to the original spot where the PR author needs to know our processes in order to get something merge? It's not too different from just asking them to ping the reviewers asking them to merge (from what I'm understanding).

https://github.com/llvm/llvm-project/pull/124910