update: init utility

Author: minkyu-choi07

ns_vfs/common/utility.py

@@ -0,0 +1,6 @@
+from datetime import datetime
+
+
+def get_filename_with_datetime(base_name):
+    current_time = datetime.now().strftime("%Y%m%d_%H%M%S")
+    return f"{base_name}_{current_time}.png"