Move TensorOptions to ATen/core (#22020)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/22020
ghimport-source-id: 62766d49658ee84b8076c555432b50e13d104bc6
Test Plan: Imported from OSS
Differential Revision: D15920763
Pulled By: zou3519
fbshipit-source-id: c3429973180a65606da82face5c0ee377035e716
