Add NXP Neutron Execution Provider support

[anallen]

This change adds support for the NXP Neutron Execution Provider to ONNX Runtime. The Neutron EP enables hardware acceleration for NXP i.MX series processors with Neural Processing Unit (NPU).

Key features:

• Add NEUTRON and NEUTRON_PINNED allocator types
• Register Neutron EP in provider factory and registration
• Add CMake build configuration for onnxruntime_USE_NEUTRON
• Add Python bindings for Neutron EP with options support

Supported operators:

• QLinearMatMul / QGemm (quantized matrix operations)
• MatMulInteger / MatMulIntegerToFloat / MatMulNBits
• NeutronGraph

[anallen]

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[anallen]

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[anallen]

Hi @tianleiwu,

This PR adds a new execution provider (Neutron EP) for NXP’s NPU.
The changes mainly include EP registration and several kernel implementations.
Could you please help review the EP integration part when you have time?

Thanks a lot for your help.
Best regards,
Allen

[tianleiwu]

@anallen,

Directly adding a new execution provider to the ONNX Runtime code is no longer recommended since ONNX Runtime 1.23. Add a plugin execution provider instead.

You can host it in your github repo.

Some examples:
https://github.com/onnxruntime/onnxruntime-ep-tensorrt
https://github.com/IBM/onnxruntime-ep-telum