add uid loading support

Hyperbar.Widget.Windows/WidgetView.xaml.cs

@@ -0,0 +1,11 @@
+using Hyperbar.Widget;
+using Microsoft.UI.Xaml.Controls;
+
+namespace Hyperbar.Widget.Windows;
+
+public sealed partial class WidgetView :
+    UserControl,
+    IWidgetView
+{
+    public WidgetView() => InitializeComponent();
+}