Implement message replying, deleting and editing

backend/dependencies.py

@@ -19,7 +19,7 @@ def get_db():
 def get_current_user(
     credentials: HTTPAuthorizationCredentials = Depends(security),
     db: Session = Depends(get_db)
-):
+) -> User:
     token = credentials.credentials
     payload = verify_token(token)
     if not payload: