huge refactor for high RewritePatterns usage and less ad-hoc cpp code

remove Spatial many ops in favor of tensor ops like in pim

src/PIM/Conversion/SpatialToPim/CMakeLists.txt

@@ -4,8 +4,16 @@ add_public_tablegen_target(SpatialToPimIncGen)
 
 add_pim_library(OMSpatialToPim
   SpatialToPimPass.cpp
+  BatchCoreLoweringPatterns.cpp
+  ChannelLoweringPatterns.cpp
+  Cleanup.cpp
   Common.cpp
-  Patterns.cpp
+  ComputeLikeRegionUtils.cpp
+  CoreLoweringPatterns.cpp
+  GlobalTensorMaterialization.cpp
+  PhaseVerification.cpp
+  ReturnPathNormalization.cpp
+  TensorPackingPatterns.cpp
 
   EXCLUDE_FROM_OM_LIBS