ns for fx: add linear-relu mod weight extraction (#55080)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/55080
Adds support for extracting weights of linear-relu module pattern.
Test Plan:
```
python test/test_quantization.py TestFXNumericSuiteCoreAPIs
```
Imported from OSS
Reviewed By: raghuramank100
Differential Revision: D27474701
fbshipit-source-id: 69ceaadc28d7fdcebd16d519367274d348b0dd29
