优化 WarningSystem Add简化， 默认就是Add(ON), Remove 就是 Add(OFF)

Project.FLY.OBJComponents/OBJComponents/Server/WarningSystem.cs

@@ -64,7 +64,10 @@ namespace FLY.OBJComponents.Server
         }
 
         #region IWarningServiceSimple
-
+        public void Add(int errcode, string description)
+        {
+            Add(errcode, description, ERR_STATE.ON, "");
+        }
 
         public void Add(int errcode, string description, ERR_STATE state)
         {