Make Conv{1,2,3}dOptions and ConvTranspose{1,2,3}dOptions different classes (#31005)
Summary:
Currently, both `Conv{1,2,3}dOptions` and `ConvTranspose{1,2,3}dOptions` are aliases of the `ConvOptions<{1,2,3}>` class, which causes confusion because the `ConvOptions` class has parameters such as `transposed` that shouldn't be exposed to the end user. (This has caused issues such as https://github.com/pytorch/pytorch/issues/30931.) This PR makes the following improvements:
1. Rename the original `torch::nn::ConvOptions<N>` class to `torch::nn::detail::ConvNdOptions<N>` class, to signify that it's an implementation detail and should not be used publicly.
2. Create new classes `torch::nn::ConvOptions<N>` and `torch::nn::ConvTransposeOptions<N>`, which have parameters that exactly match the constructor of `torch.nn.Conv{1,2,3}d` and `torch.nn.ConvTranspose{1,2,3}d` in Python API.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/31005
Differential Revision: D18898048
Pulled By: yf225
fbshipit-source-id: 7663d646304c8cb004ca7f4aa4e70d3612c7bc75
