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/Compiler/PimWeightEmitter.hpp

@@ -0,0 +1,16 @@
+#pragma once
+
+#include "mlir/Dialect/Func/IR/FuncOps.h"
+#include "mlir/IR/Value.h"
+
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/StringRef.h"
+
+#include <string>
+
+namespace onnx_mlir {
+
+llvm::DenseMap<size_t, llvm::DenseMap<mlir::Value, std::string>>
+createAndPopulateWeightFolder(mlir::func::FuncOp funcOp, llvm::StringRef outputDirPath);
+
+} // namespace onnx_mlir