Reapply "Merge branch 'main' of https://github.com/GooGuTeam/osu_lazer_api"

This reverts commit 68701dbb1d.

app/router/signalr/exception.py

@@ -0,0 +1,6 @@
+class SignalRException(Exception):
+    pass
+
+class InvokeException(SignalRException):
+    def __init__(self, message: str) -> None:
+        self.message = message