Add prioritized callbacks to Message Bus

Priority from 1 to 100, with 1 being highest

Author: miketwo

message_bus_tools.py

@@ -95,6 +95,7 @@ def unsubscribe(self, event_type, uid):
     def publish(self, event_type: Message, data):
         self.lock_count += 1
         if event_type in self.subscribers:
+
             sorted_callbacks = sorted([(x[1][0], x[1][1]) for x in self.subscribers[event_type].items()], key=lambda x: x[1])
             for callback, priority in sorted_callbacks:
                 if self.debug: