[MLIR][GPU-LLVM] Define `-convert-gpu-to-llvm-spv` pass (#90972)

Define pass for GPU to LLVM conversion for SPIR-V backend tool ingest.

Supported operations:

- `gpu.block_id`
- `gpu.global_id`
- `gpu.block_dim`
- `gpu.thread_id`
- `gpu.grid_dim`
- `gpu.barrier`
- `gpu.shuffle`

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Signed-off-by: Victor Perez <victor.perez@codeplay.com>