Adds View Style to Apps list

BTCPayServer/Controllers/AppsController.cs

@@ -73,6 +73,8 @@ namespace BTCPayServer.Controllers
                                 return app.StoreName;
                             case nameof(app.AppType):
                                 return app.AppType;
+                            case nameof(app.ViewStyle):
+                                return app.ViewStyle;
                             default:
                                 return app.Id;
                         }