chore(pre-commit): add pre-commit

app/router/signalr/exception.py

@@ -1,6 +1,10 @@
+from __future__ import annotations
+
+
 class SignalRException(Exception):
     pass
 
+
 class InvokeException(SignalRException):
     def __init__(self, message: str) -> None:
         self.message = message