Feat:dataset retiever resource (#1123)

Co-authored-by: jyong <jyong@dify.ai>
Co-authored-by: StyleZhang <jasonapring2015@outlook.com>

api/controllers/console/universal_chat/wraps.py

@@ -47,6 +47,7 @@ def universal_chat_app_required(view=None):
                     suggested_questions=json.dumps([]),
                     suggested_questions_after_answer=json.dumps({'enabled': True}),
                     speech_to_text=json.dumps({'enabled': True}),
+                    retriever_resource=json.dumps({'enabled': True}),
                     more_like_this=None,
                     sensitive_word_avoidance=None,
                     model=json.dumps({