编写sf生产完工入库提醒，订单发货提醒代码

sf_message/models/__init__.py

@@ -7,3 +7,4 @@ from . import sf_message_functional_tool_assembly
 from . import sf_message_purchase
 from . import sf_message_workorder
 from . import sf_message_functional_tool_dismantle
+from . import sf_message_mrp_production