[llvm] [Workflow] Add new code format helper. (PR #66684)

[Tom Stellard via llvm-commits]

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

This looks good to me.

My personal preference would be to have these changes added as code suggestions to the review, so the author could automatically apply the fixes just by clicking on them, but that can be done as a follow on patch.  Did you look into doing this at all?  If so, do you have some documentation you could share in case someone else wants to try to implement it.

https://github.com/llvm/llvm-project/pull/66684