[clang] [clang-tools-extra] [clang] Concepts: support pack expansions for type constraints (PR #132626)

[Matheus Izvekov via cfe-commits]

mizvekov wrote:

> The patch looks good overall, but as you've suggested that this is incomplete, I think we want to go over it again after the cache part gets adapted.

My intention is to leave the main branch in a better state, not necessarily to finish everything here in one go.
I think as far as the scope of the changes, this looks good.


https://github.com/llvm/llvm-project/pull/132626