Move get_modified_files.py to codestyle floder

Author: huanghengheng

Makefile

@@ -19,7 +19,7 @@ format:
 
 .PHONY: lint
 lint:
-	$(eval modified_py_files := $(shell python scripts/get_modified_files.py $(check_dirs)))
+	$(eval modified_py_files := $(shell python scripts/codestyle/get_modified_files.py $(check_dirs)))
 	@if test -n "$(modified_py_files)"; then \
 		echo ${modified_py_files}; \
 		pre-commit run --files ${modified_py_files}; \