[Build] ONNX Runtime Support for Cortex-M33 and Cortex-M7

### Describe the issue

I successfully ran ONNX Runtime on Cortex-A55 for a basic matrix multiplication example by directly downloading the AArch64 ONNX Runtime library.

However, I want to try it on low-level microcontrollers, so I followed the [official ONNX Runtime build guide](https://onnxruntime.ai/docs/build/inferencing.html) to generate an ONNX Runtime library for ARM Cortex-M33 and Cortex-M7. I am unsure if running ONNX Runtime on Cortex-M series microcontrollers is feasible.

Since Cortex-M33 is part of the ARMv8-M family, does ONNX Runtime officially support it? If not, are there any recommended lightweight alternatives for running ONNX models on Cortex-M33/M7?

I would appreciate any insights or guidance on this

### Urgency

_No response_

### Target platform

M33 and M7

### Build script

I followed the [official ONNX Runtime build guide](https://onnxruntime.ai/docs/build/inferencing.html) to generate an ONNX Runtime library for ARM Cortex-M33

### Error / output

Couldn't able to build

### Visual Studio Version

_No response_

### GCC / Compiler Version

_No response_

Read the official ONNX Runtime build guide and compare its documented targets with Cortex-M33 and Cortex-M7; reproduce the failed library build for those platforms. Done means establishing whether they are supported and documenting a recommended lightweight alternative if they are not.

Written by the indexing model from the issue text.