add packaging requirements to setup.py

Author: rekby

setup.py

@@ -27,6 +27,7 @@
         "protobuf>=3.13.0",
         "grpcio>=1.5.0",
         "enum-compat>=0.0.1",
+        "packaging"
     ),
     options={"bdist_wheel": {"universal": True}},
     extras_require={