Base class for the quantized ConvTranspose (#35370)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/35370
Test Plan: Imported from OSS
Differential Revision: D20641812
Pulled By: z-a-f
fbshipit-source-id: 42bb1ed96d6b6e0a5da6e693d02ff616c33d9ef6
