Add project files.

Hyperbar.Desktop/Views/CommandView.xaml

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+<?xml version="1.0" encoding="utf-8" ?>
+<Page
+    x:Class="Hyperbar.Desktop.CommandView"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+    <ItemsControl ItemTemplateSelector="{Binding TemplateFactory}" ItemsSource="{Binding}">
+        <ItemsControl.ItemsPanel>
+            <ItemsPanelTemplate>
+                <StackPanel Orientation="Horizontal" />
+            </ItemsPanelTemplate>
+        </ItemsControl.ItemsPanel>
+
+    </ItemsControl>
+</Page>

Hyperbar.Desktop/Views/CommandView.xaml.cs

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+using Microsoft.UI.Xaml.Controls;
+
+namespace Hyperbar.Desktop;
+
+public sealed partial class CommandView : Page
+{
+    public CommandView() => InitializeComponent();
+}

Hyperbar.Desktop/Views/CommandViewModel.cs

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+namespace Hyperbar.Desktop;
+
+public partial class CommandViewModel : 
+    ObservableCollectionViewModel,
+    ITemplatedViewModel
+{
+    public CommandViewModel(ITemplateFactory templateFactory)
+    {
+        TemplateFactory = templateFactory;
+
+        this.Add(new ContextualCommandViewModel(templateFactory));
+        this.Add(new ContextualCommandViewModel(templateFactory));
+        this.Add(new ContextualCommandViewModel(templateFactory));
+        this.Add(new ContextualCommandViewModel(templateFactory));
+        this.Add(new ContextualCommandViewModel(templateFactory));
+
+        var d = Items;
+    }
+
+    public ITemplateFactory TemplateFactory { get; }
+}

Hyperbar.Desktop/Views/ContextualCommandView.xaml

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+<?xml version="1.0" encoding="utf-8" ?>
+<Page
+    x:Class="Hyperbar.Desktop.ContextualCommandView"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:local="using:Hyperbar.Desktop"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"
+    mc:Ignorable="d">
+
+    <Grid>
+        <Button />
+    </Grid>
+</Page>

Hyperbar.Desktop/Views/ContextualCommandView.xaml.cs

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+using Microsoft.UI.Xaml.Controls;
+
+namespace Hyperbar.Desktop;
+
+public sealed partial class ContextualCommandView : Page
+{
+    public ContextualCommandView() => InitializeComponent();
+}

Hyperbar.Desktop/Views/ContextualCommandViewModel.cs

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+namespace Hyperbar.Desktop;
+
+public class ContextualCommandViewModel :
+    ITemplatedViewModel
+{
+    public ContextualCommandViewModel(ITemplateFactory templateFactory)
+    {
+        TemplateFactory = templateFactory;
+    }
+
+    public ITemplateFactory TemplateFactory { get; }
+}