Add NHWC support to Resize Operator (#15553)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/15553
Add unit test and implementation of NHWC layout for Resize operator.
Also, add pragma parallel loop to old NCHWC layout.
Reviewed By: jspark1105
Differential Revision: D13540762
fbshipit-source-id: eebf252bf0d1efdff180a171d804181045f100a5
