[llvm] [mlir] [TOSA] Add Tosa_Shape type and ConstShapeOp (PR #122547)

[Luke Hutton via llvm-commits]

https://github.com/lhutton1 commented:

Thanks for the PR @Jerry-Ge! I had a look and left a few comments below, largely they're just questions along with some requests for better test coverage

https://github.com/llvm/llvm-project/pull/122547