[special] Add `xlog1py` (#55138)
Summary:
Reference : https://github.com/pytorch/pytorch/issues/50345
* [x] Check Rendered Document (https://12494173-65600975-gh.circle-artifacts.com/0/docs/special.html#torch.special.xlog1py)
* [x] Tests in Binary Ufunc
* [x] OpInfo
* [x] Structured Kernel
Pull Request resolved: https://github.com/pytorch/pytorch/pull/55138
Reviewed By: ngimel
Differential Revision: D27961461
Pulled By: mruberry
fbshipit-source-id: 30a8f41970a829bf50254aadf5615e8ce4148c7e
