[quant][graphmode] Add support for quantized conv1d + relu fusion (#38441)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/38441
Test Plan:
python test/test_quantization.py test_quantized_conv1d_relu
Imported from OSS
Differential Revision: D21575919
fbshipit-source-id: d43e33052ce1be5e38acef8fac16f22cb11c0695
