Add notification pagination to backend and frontend

backend/backend.py

@@ -1,5 +1,5 @@
 from datetime import datetime
-from fastapi import FastAPI
+from fastapi import FastAPI, Query
 from fastapi.exceptions import HTTPException
 from fastapi.middleware.cors import CORSMiddleware
 from pydantic import BaseModel
@@ -144,11 +144,18 @@ def remove_subscription(subscription_id: int):
 
 
 @app.get("/subscriptions/{subscription_id}/notifications")
-def list_subscription_notifications(subscription_id: int):
+def list_subscription_notifications(
+    subscription_id: int,
+    limit: int = Query(20, ge=1, le=100),
+    offset: int = Query(0, ge=0),
+):
     db = SessionLocal()
     notifications = (
         db.query(Notification)
         .filter(Notification.subscription_id == subscription_id)
+        .order_by(Notification.created_at.desc())
+        .limit(limit)
+        .offset(offset)
         .all()
     )
     db.close()