Make task for concatenating files

Author: santosh79

Makefile

@@ -22,5 +22,18 @@ stop_prod:
 test: clean
 	mix test
 
+concatenate:
+	@echo "Concatenating project files..."
+	@files=$$(find lib test -name '*.ex' -o -name '*.exs' -o -name 'mix.exs'); \
+	echo "" > concatenated_project_files.ex; \
+	for file in $$files; do \
+		echo "# File: $$file" >> concatenated_project_files.ex; \
+		echo "" >> concatenated_project_files.ex; \
+		cat $$file >> concatenated_project_files.ex; \
+		echo "" >> concatenated_project_files.ex; \
+	done
+	@echo "Files successfully concatenated into concatenated_project_files.ex"
+
 PHONY:
-	build build_prod
+	build build_prod concatenate
+