初步完成数据中心服务类

DMS.WPF/App.xaml.cs

@@ -167,6 +167,7 @@ public partial class App : System.Windows.Application
         services.AddSingleton<IDeviceAppService,DeviceAppService>();
         services.AddSingleton<IVariableAppService,VariableAppService>();
         services.AddSingleton<IVariableTableAppService,VariableTableAppService>();
+        services.AddSingleton<IDataCenterService, DataCenterService>();
         services.AddSingleton<INavigationService, NavigationService>();
         services.AddSingleton<IMenuService, MenuService>();
         services.AddSingleton<IDialogService, DialogService>();