[quant][graphmode][fx] Produce conv reference static quant modules (#60138)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/60138
Test Plan:
python test/test_quantization.py TestQuantizeFx
Imported from OSS
Reviewed By: vkuzo
Differential Revision: D29184791
fbshipit-source-id: 971a40012dbba0cf687c62a3a4af9358513c253b
