修正add menu返回的是空字符串而不是boolean的错误

src/main/java/route/CtrlMenu.kt

@@ -60,7 +60,7 @@ class CtrlMenu : Controller() {
 //        val isSuccess = menu2.save()
         val isSuccess = service.save(ModelMenu::class, menu)
         return if (isSuccess) {
-            responseSuccess("")
+            responseSuccess(isSuccess)
         } else {
             responseOperationFailed()
         }