[Static Runtime] Add static_runtime::fused_sigrid_transforms (#66659)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/66659
Original message: We added and registered a new operator, static_runtime::fused_sigrid_transforms, and modified the original sigrid_transforms to handle non-fused case only
Note: this diff was commandeered from a bootcamper. Some final touches were needed.
Test Plan: `buck test caffe2/benchmarks/static_runtime/...`
Reviewed By: swolchok
Differential Revision: D31550307
fbshipit-source-id: 287380be0cca20ee6e145bcc7217547bd58cf6d0
