[feat] UI for user notifications (#3267)

lnbits/core/models/users.py

@@ -25,6 +25,9 @@ class UserExtra(BaseModel):
     first_name: str | None = None
     last_name: str | None = None
     display_name: str | None = None
+    nostr_notification_identifiers: list[str] = []
+    telegram_chat_id: str | None = None
+    notifications_excluded_wallets: list[str] = []
     picture: str | None = None
     # Auth provider, possible values:
     # - "env": the user was created automatically by the system