[llvm] [openacc][openmp] Add dialect representation for acc atomic operations (PR #65493)

[Razvan Lupusoru via llvm-commits]

razvanlupusoru wrote:

@aartbik Since I added new interfaces, several cmake files had to be updated. I attempted to do the same for the bazel build but did not test it. Would you mind looking through the changes? Thank you!

https://github.com/llvm/llvm-project/pull/65493