[libcxx-commits] [libcxx] [libc++] Add coding guidelines to the docs (PR #117051)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne requested changes to this pull request.

I think this makes a lot of sense and I especially appreciate the reorganization! I have some comments below.

https://github.com/llvm/llvm-project/pull/117051