feat(notifications): added notifications business logic

src/backend/apps/notifications/tasks.py

@@ -0,0 +1,19 @@
+import logging
+
+from apps.notifications.services import flush_pending_notifications
+from config.celery import app
+
+logger = logging.getLogger("lotty")
+
+
+@app.task(bind=True, name="notifications.flush_pending")
+def flush_pending_notifications_task(self):
+    results = flush_pending_notifications()
+    logger.info(
+        "notifications_flush_completed",
+        extra={
+            "sent": results["sent"],
+            "failed": results["failed"],
+        },
+    )
+    return results