[llvm] [ci] Add ids workflow for checking llvm apis have been annotated with LLVM_ABI (PR #128370)

[via llvm-commits]

mcbarton wrote:

> > @andrurogerz Thanks for the suggestion. My workflow doesn't currently work with the suggestion since it cannot access the HEAD~1 commit (see https://github.com/llvm/llvm-project/actions/runs/13796002477/job/38587684995?pr=128370#step:8:5) . Do you have an alternative suggestion, or can you see the mistake in my workflow as to why it cannot access the commit?
> 
> You may want to look at the https://github.com/llvm/llvm-project/blob/main/.github/workflows/pr-code-format.yml#L21 workflow. I think it might do what you want.

Thanks for the suggestion. I worked out my silly mistake after I sent that message. I wasn't in a git repo when I executed the command. The workflow is now running by based on https://github.com/llvm/llvm-project/actions/runs/13796145413/job/38588151792?pr=128370#step:8:6 . I just need to refine the diff so it only gives me the files with particular extensions. 

https://github.com/llvm/llvm-project/pull/128370