[llvm] [CODEOWNERS] Request notifications (PR #227742)

[Florian Hahn via llvm-commits]

fhahn wrote:

>  I only put up this PR as a last-ditch effort, after my pr-subscribers request has been pending for over three weeks, and I ran out of things to try. I

I am not sure what this means, trying to add yourself to a group and it did not get approved?

> GitHub send unstructured HTML emails, and I'm not able to figure out how to get it to send structured plain-text email or structured plain-text over NNTP either 

I am not sure how adding to code owners helps, it will also send the same emails via Github? With labels, the anyone can find the PRs in the Github UI + get emails if they subscribe 

https://github.com/llvm/llvm-project/pull/227742