Refactor template processing to include process modes

Updated the build process to handle template paths with associated processing modes. This change lays the groundwork for incorporating `skip` and `copy_only` attributes in a future update, as noted in TODO[#20].

project_forge/commands/build.py

@@ -31,7 +31,11 @@ def build_project(
             overlay.ask_questions = False
     context = build_context(composition, ui_function, initial_context)
 
-    template_paths = [overlay.pattern.template_location.resolve() for overlay in overlays]  # type: ignore[union-attr]
+    # TODO[#20]: Need to incorporate `skip`, and `copy_only` attributes to the templates for rendering
+
+    template_paths = [
+        (overlay.pattern.template_location.resolve(), overlay.pattern.get_process_mode) for overlay in overlays
+    ]
     inheritance = catalog_inheritance(template_paths)
     env = load_environment(inheritance)
     root_path = render_env(env, inheritance, context, output_dir)