[llvm] Add debuginfo C support for a SetType, Subrangetype, dynamic array type and replace arrays (PR #135607)

[Tom Tromey via llvm-commits]

tromey wrote:

> cc @tromey who looks to have added DISubrangeType initially in #126772 - would you be able to give this patch a quick review if you are able?

Other than the `unwrap` thing (which I think applies to multiple arguments here), it seems fine to me.  Thanks.

https://github.com/llvm/llvm-project/pull/135607