[ONNX] More debug logging from fx to onnx (#107654)
Summary:
- Log fx graph name for 'fx-graph-to-onnx' diagnostic.
- Log fx graph and onnx graph under DEBUG verbosity level for 'fx-graph-to-onnx' diagnostic.
- Adjust unittest to run with diagnostics verbosity level logging.DEBUG.
- Sarif logs will be saved for unittest when `TORCH_LOGS="onnx_diagnostics"` is set.
<img width="640" alt="image" src="https://github.com/pytorch/pytorch/assets/9376104/a5718530-3594-46fb-85a2-b8bcc8ba01c7">
Pull Request resolved: https://github.com/pytorch/pytorch/pull/107654
Approved by: https://github.com/justinchuby, https://github.com/titaiwangms
ghstack dependencies: #107408, #107409, #107653
