ns for fx: add category for ops which accept fp32 or int8 input (#55859)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/55859
Adds mappings for ops which can accept either fp32 or int8 input,
such as `F.relu`. A future PR will fill out the op coverage.
Test Plan:
```
python test/test_quantization.py TestFXNumericSuiteCoreAPIs.test_op_with_either_fp32_or_int8_input
```
Imported from OSS
Reviewed By: raghuramank100
Differential Revision: D27740659
fbshipit-source-id: cfc3dd58319b7161ca7f1fe05cd22d9a3ff11141
