[ONNX] Wrap op validation inputs and add export_options.py and function_dispatcher.py (#94721)
1. `_validate_op_between_ort_torch` inputs was not wrapped (preprocessed) properly.
2. Introduce function_dispatcher.py to store decompistion table (atn/prim) and ATenLib
3. Introduce ~~export_options.py~~ options.py
Pull Request resolved: https://github.com/pytorch/pytorch/pull/94721
Approved by: https://github.com/BowenBao
