菜单父节点常量添加

lift-common/src/main/java/cn.com.ty.lift.common/constants/ApiConstants.java

@@ -34,4 +34,9 @@ public class ApiConstants {
      * 未删除
      */
     public static final int DELETE_NO = 0;
+
+    /**
+     * 菜单根节点父id
+     */
+    public static final Long ROOT_MENU_PARENT_ID = 0L;
 }