TASK: sketchboard library数据添加年龄组

src/main/java/com/ai/da/model/vo/LibraryUpdateVo.java

@@ -35,6 +35,9 @@ public class LibraryUpdateVo implements Serializable {
     @ApiModelProperty("二级类型")
     private String level2Type;
 
+    @ApiModelProperty("年龄段")
+    private String ageGroup;
+
     @ApiModelProperty("名字")
     private String name;