feat: 단일 인덱스 추가

Author: opficdev

Firebase/firestore.index.json

@@ -578,6 +578,28 @@
     }
   ],
   "fieldOverrides": [
+    {
+      "collectionGroup": "todoLists",
+      "fieldPath": "dueDate",
+      "indexes": [
+        {
+          "order": "ASCENDING",
+          "queryScope": "COLLECTION"
+        },
+        {
+          "order": "DESCENDING",
+          "queryScope": "COLLECTION"
+        },
+        {
+          "order": "ASCENDING",
+          "queryScope": "COLLECTION_GROUP"
+        },
+        {
+          "order": "DESCENDING",
+          "queryScope": "COLLECTION_GROUP"
+        }
+      ]
+    },
     {
       "collectionGroup": "todoLists",
       "fieldPath": "isDeleted",