[clang] [llvm] [clang] Add "debug_transparent" attribute (PR #110188)

[Augusto Noronha via cfe-commits]

augusto2112 wrote:

> As a new feature, this needs a proposal on Discourse.

@efriedma-quic as an RFC under clang? I wasn't aware this was a rule, is this a recent change?

https://github.com/llvm/llvm-project/pull/110188