feat: Implement MFA authentication, add ride statistics model, and update various services, APIs, and tests across the application.

backend/apps/lists/serializers.py

@@ -1,7 +1,10 @@
 from rest_framework import serializers
-from .models import UserList, ListItem
+
 from apps.accounts.serializers import UserSerializer
 
+from .models import ListItem, UserList
+
+
 class ListItemSerializer(serializers.ModelSerializer):
     class Meta:
         model = ListItem