add auto keywords and auto-question (#2965)

### What problem does this PR solve?

#2687

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

api/apps/sdk/dify_retrieval.py

@@ -1,10 +1,25 @@
+#
+#  Copyright 2024 The InfiniFlow Authors. All Rights Reserved.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
 from flask import request, jsonify
 
-from db import LLMType, ParserType
-from db.services.knowledgebase_service import KnowledgebaseService
-from db.services.llm_service import LLMBundle
-from settings import retrievaler, kg_retrievaler, RetCode
-from utils.api_utils import validate_request, build_error_result, apikey_required
+from api.db import LLMType, ParserType
+from api.db.services.knowledgebase_service import KnowledgebaseService
+from api.db.services.llm_service import LLMBundle
+from api.settings import retrievaler, kg_retrievaler, RetCode
+from api.utils.api_utils import validate_request, build_error_result, apikey_required
 
 
 @manager.route('/dify/retrieval', methods=['POST'])