[WIP] NPU GPU co-execution in QNN EP - #794
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- Segmented execution: HTP and GPU segments compiled from a single fused node; intermediate buffers plumbed between segments with DX12 MEMHANDLE shadow tensors for GPU-external I/O. - Skip GPU validation for nodes HTP already accepted (skip_nodes on GetSupportedNodes overload) so only HTP-rejected ops are validated against GPU. - Debug instrumentation: STANDALONE-TENSOR-DUMP, MEM-BIND traces, CREATESTATE-DEBUG for compute-info wiring.
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Motivation and Context