[llvm] [LLVM][NVPTX] Add codegen support for tcgen05.{ld, st} instructions (PR #126740)

[Artem Belevich via llvm-commits]

Artem-B wrote:

Your huge diff likely contains all the changes on your branch *and* on `main` since the point the branches diverged.

With github, I find it useful to commit review changes as separate commits, and not rebasing them until either everything is done, or there's something absolutely needed from the main branch. Keeping incremental changes separate makes it easier to see what's changed during each feedback cycle.  Once reviews are done, sync my repo, and rebase. Then let github squash the stack when merging.

https://github.com/llvm/llvm-project/pull/126740