[compiler]Auto split onnx model for NPU by unsupported OPs and model size

[chenyx113]

when converting the onnx models to NPU format, we may meet some unsupported OPs, if there are too many OPs and layers have such issue, it is difficult to split manually, so we need a auto analysis and subgraph tool for onnx model according to NPU specification, we will consider to develop and contribute such feature for Samsung One, thank you

[lemmaa]

@chenyx113 , could you please contact me via company email? Thank you in advance!