61b24c61a9
This PR adds XeGPU 2D block operators. It contains:
1. TensorDescType and TensorDescAttr definitions
2. MemoryScopeAttr and CacheHintAttr definitions which are used by
TensorDescAttr.
3. CreateNdDescOp, PrefetchNdOp, LoadNdOp, and StoreNdOp definitions,
and their corresponding testcases for illustration.
It cherry-picks daebe5c4f2 with asan fix.
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Co-authored-by: Mehdi Amini <joker.eph@gmail.com>