Add pybind recipes for constant_folding and debug log for node_export.py

Context

Pybind added for constant_folding and add debug logs for pybind_Recipes.cpp

Modified files

• pybind_Recipes.cpp ;
• node_export.py, debug logs and only including .h and .hpp files ;

aidge_core/export_utils/node_export.py

@@ -427,7 +427,7 @@ class ExportNodeCpp(ExportNode):
             kernel_include_list.append(
                 self.kernels_path + "/" + kernel_path.stem + kernel_path.suffix)
             
-            if kernel_path.suffix is ["h", "hpp"]:
+            if kernel_path.suffix in ["h", "hpp"]:
                 kernel_include_list.append(
                     self.kernels_path + "/" + kernel_path.stem + kernel_path.suffix)
             else : aidge_core.Log.debug(f"Did not copy {kernel_path.stem} because suffix is {kernel_path.suffix}, which is not 'h' or 'hpp'.")