(improvement)(Headless) Add 'topFields' to the map interface and return dataSet and field names in Chinese. (#892)

chat/api/src/main/java/com/tencent/supersonic/chat/api/pojo/request/ChatParseReq.java

@@ -10,6 +10,7 @@ public class ChatParseReq {
     private String queryText;
     private Integer chatId;
     private Integer agentId;
+    private Integer topN = 10;
     private User user;
     private QueryFilters queryFilters;
     private boolean saveAnswer = true;