add type annotations to torch.nn.modules.conv (#49564)
Summary:
closes gh-49563
Pull Request resolved: https://github.com/pytorch/pytorch/pull/49564
Reviewed By: albanD
Differential Revision: D25917441
Pulled By: walterddr
fbshipit-source-id: 491dc06cfc1bbf694dfd9ccefca4f55488a931b2
