[FX] Make arg normalization a method on Node and not a pass (also augment tests to be exhaustive) (#55992)
Summary:
Commandeered from https://github.com/pytorch/pytorch/pull/54563
Primary changes from first PR:
1. Refactored primary `normalize_function` logic into `operator_schemas.py` so that non-FX users can use it.
2. Refactored tests a bit, and added a path to call `normalize_function` directly.
3. Moved check for `boolean_dispatch` so that `torch.lu` also gets properly handled.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/55992
Reviewed By: mruberry
Differential Revision: D27774396
Pulled By: Chillee
fbshipit-source-id: 7f65632e1d608e4abd55aec5ccbfdc3f67f52b8e
