✨ Added an optional field for push subscriptions in the user model.

app/models/user.py

@@ -1,8 +1,10 @@
 from pydantic import BaseModel, Field
+from typing import Optional
 
 
 class User(BaseModel):
     uid: str = Field(..., alias="_id")
     username: str
     password: str
-    is_admin: bool = False
+    is_admin: bool = False
+    push_subscriptions: Optional[list[str]] = []