[WIP][LTC] Upstream class Shape (#67672)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/67672
This commit Upstreams class Shape from lazy_tensor_staging branch.
Test Plan: WIP.
Reviewed By: malfet
Differential Revision: D32095478
Pulled By: alanwaketan
fbshipit-source-id: 61611b12fc079b195833b5b22a6cf73c0935b8b9
