[generate_opcheck_tests] Add some reasonable defaults (#110977)
Summary:
Make it easier to add `generate_opcheck_tests` by adding defaults for
the failures_dict location, the additional decorators, and the test
utils.
Test Plan:
Existing tests
Reviewers:
Subscribers:
Tasks:
Tags:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/110977
Approved by: https://github.com/williamwen42
ghstack dependencies: #110951
