Add assert_tensor_equal and assert_tensor_not_equal to test/cpp/api/support.h (#30426)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/30426
This PR adds `assert_tensor_equal` and `assert_tensor_not_equal` to `test/cpp/api/support.h`, as better functions for testing whether two tensors are equal / not equal.
Test Plan: Imported from OSS
Differential Revision: D18695900
Pulled By: yf225
fbshipit-source-id: c19b9bc4c4e84d9f444015023649d27618fcbdf5
