[clang] [Clang] Introduce 'clang-nvlink-wrappaer' to work around 'nvlink' (PR #96561)

[Joseph Huber via cfe-commits]

jhuber6 wrote:

> @Artem-B asked me to review nvptx patches while he's OOO, but this one is pretty far outside my depth. Are you OK waiting until he's back? I don't know exactly when that will be, but based on his IMs to me, he should be back early July.

No problem, I knew that it would probably take awhile to get reviewed given the size. I believe he said he'd be back early July as well, so maybe next week? It'd probably require his input, along with some of the other interested parties in clang to see how they feel about reviving one of these old tools.

(However if you know anything about the NVPTX varargs API I think https://github.com/llvm/llvm-project/pull/96015 is mostly just waiting for someone to say that it's a mostly correct lowering)

https://github.com/llvm/llvm-project/pull/96561