Added startup for result backends. (#118)

Author: s3rius

taskiq/abc/broker.py

@@ -132,6 +132,8 @@ async def startup(self) -> None:
         for handler in self.event_handlers[event]:
             await maybe_awaitable(handler(self.state))
 
+        await self.result_backend.startup()
+
     async def shutdown(self) -> None:
         """
         Close the broker.
@@ -147,6 +149,8 @@ async def shutdown(self) -> None:
         for handler in self.event_handlers[event]:
             await maybe_awaitable(handler(self.state))
 
+        await self.result_backend.shutdown()
+
     @abstractmethod
     async def kick(
         self,