(fix)(headless) add necessary annotations and opt QueryReqConverter limit logic (#923)

headless/core/src/main/java/com/tencent/supersonic/headless/core/parser/DefaultQueryParser.java

@@ -56,9 +56,9 @@ public class DefaultQueryParser implements QueryParser {
             throw new RuntimeException("parse Exception: " + queryStatement.getErrMsg());
         }
         String querySql =
-                Objects.nonNull(queryStatement.getEnableLimitWrapper()) && queryStatement.getEnableLimitWrapper()
+                Objects.nonNull(queryStatement.getLimit()) && queryStatement.getLimit() > 0
                         ? String.format(SqlExecuteReq.LIMIT_WRAPPER,
-                        queryStatement.getSql())
+                        queryStatement.getSql(), queryStatement.getLimit())
                         : queryStatement.getSql();
         queryStatement.setSql(querySql);
     }

headless/core/src/main/java/com/tencent/supersonic/headless/core/pojo/QueryStatement.java

@@ -33,6 +33,7 @@ public class QueryStatement {
     private SemanticModel semanticModel;
 
     private SemanticSchemaResp semanticSchemaResp;
+    private Integer limit;
 
     public boolean isOk() {
         this.ok = "".equals(errMsg) && !"".equals(sql);