Adopt a robust OWNERs file policy

[castrojo]

https://chromium.googlesource.com/chromium/src/+/refs/heads/main/docs/code_reviews.md
https://www.kubernetes.dev/docs/guide/owners/

[kapilt]

not sure what you mean by robust, but we are unlike those two projects we are using github native features versus our own bots, which means we have to adhere to https://docs.github.com/en/github/creating-cloning-and-archiving-repositories/creating-a-repository-on-github/about-code-owners