[clang] [CIR] Upstream ShuffleOp for VectorType (PR #142288)

[Amr Hesham via cfe-commits]

AmrDeveloper wrote:

Notes:

- The folder will be in the follow-up PR.
- As far as I understand, they must be the same size, and I think this part of the Op description in the incubator is not fully correct. Is that correct?

`The size of the result vector does not have to match the size of the individual input vectors or of the concatenated vector.`

https://github.com/llvm/clangir/blob/6e5fa09550c98f84d017873ed3e5667fd5fd909c/clang/include/clang/CIR/Dialect/IR/CIROps.td#L3305-L3306


https://github.com/llvm/llvm-project/pull/142288