[llvm] [flang] [clang] [mlir] [compiler-rt] [clang-tools-extra] [mlir][tosa] Add dialect version. (PR #79514)

[Mehdi Amini via cfe-commits]

https://github.com/joker-eph requested changes to this pull request.

This lack some information to me:

- What is the purpose of this?
- What kind of compatibility is this supposed to provide?
- What is the versioning scheme?

https://github.com/llvm/llvm-project/pull/79514