[clang] [Clang][P1061] Add stuctured binding packs (PR #121417)

[Younan Zhang via cfe-commits]

https://github.com/zyn0217 commented:

Here is an interesting case involving lambda captures:

https://godbolt.org/z/Y7EhE7Gvq

(Everything would become scary when lambda comes into play)

https://github.com/llvm/llvm-project/pull/121417