[quant][graphmode][fx] Support preserving attributes in deepcopy of observed/quantized graphmodule (#56550)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/56550
Add support for preserving a list of attributes on observed/quantized GraphModule
Test Plan:
python test/test_quantization.py TestQuantizeFx.test_deepcopy_preserve_attributes
Imported from OSS
Reviewed By: vkuzo, kazhang
Differential Revision: D27899317
fbshipit-source-id: ebf21334715e5ab764aaa27eed534cc0cdf9f2b5
