Implement tensor.set_names_, tensor.names setter
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/23172
Test Plan:
- [namedtensor ci]
gh-metadata: pytorch pytorch 23172 gh/zou3519/74/head
Imported from OSS
Differential Revision: D16494364
Pulled By: zou3519
fbshipit-source-id: 8d0e26b33346d4eadba30b2e76610f6d7be7c373
