wrapped custom widget items in containers so we have more control of the surrounding, i.e. divider

Hyperbar.Windows.UI/Templates/DataTemplateConverter.cs

@@ -0,0 +1,15 @@
+using Microsoft.UI.Xaml.Controls;
+
+namespace Hyperbar.Windows.UI;
+
+public class DataTemplateConverter : 
+    ValueConverter<object, DataTemplateSelector> 
+{
+    protected override DataTemplateSelector? ConvertTo(object value, 
+        Type? targetType, 
+        object? parameter, 
+        string? language)
+    {
+        return new TemplateGenerator();
+    }
+}