Add onnxruntime-server

[derekwin]

Integrate the onnxruntime-server to enable efficient inference for a wide range of ONNX models.

[derekwin]

Changes and Considerations

• Added onnxruntime-server as a new optional backend. https://github.com/derekwin/OneInfer/tree/onnxruntime-server
• Supporting ONNX models introduces additional complexity. ONNX-related tasks often require multiple ONNX files, and different model vendors manage these models in various ways. This lack of uniformity makes it challenging to serve ONNX models in a unified manner.