[quant] Refactor quantization tracer to a separate file (#80268)
Summary:
att, since we need to reuse the tracer in some other places
Test Plan:
python test/test_quantization.py TestQuantizeFx
Reviewers:
Subscribers:
Tasks:
Tags:
Differential Revision: [D37435748](https://our.internmc.facebook.com/intern/diff/D37435748)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/80268
Approved by: https://github.com/vkuzo
