refactor: add id, set userid to any

src/schemas/user.py

@@ -1,11 +1,12 @@
 from dataclasses import dataclass
-
+from typing import Any
 
 @dataclass
 class User:
     username: str
-    id: int
+    userid: Any
     email: str
+    id : int = None
 
     def __repr__(self):
-        return f"Name: {self.username}\nMatrikelnr.: {self.id}\neMail: {self.email}"
+        return f"Name: {self.username}\nMatrikelnr.: {self.userid}\neMail: {self.email}"