[Inductor CUTLASS backend] Step 5: Gemm CUTLASS templates (#108015)
This is the step 5 to add cutlass as an alternative inductor backend.
Feature request: https://github.com/pytorch/pytorch/issues/106991.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/108015
Approved by: https://github.com/kadeng, https://github.com/jansel, https://github.com/aakhundov
ghstack dependencies: #107802, #107847, #107901, #107931
