feat: initialize.

demo/Ursa.Demo/Pages/AvatarDemo.axaml

@@ -0,0 +1,9 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:u="https://irihi.tech/ursa"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="Ursa.Demo.Pages.AvatarDemo">
+    <u:Avatar />
+</UserControl>

demo/Ursa.Demo/Pages/AvatarDemo.axaml.cs

@@ -0,0 +1,13 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+
+namespace Ursa.Demo.Pages;
+
+public partial class AvatarDemo : UserControl
+{
+    public AvatarDemo()
+    {
+        InitializeComponent();
+    }
+}

demo/Ursa.Demo/ViewModels/AvatarDemoViewModel.cs

@@ -0,0 +1,6 @@
+namespace Ursa.Demo.ViewModels;
+
+public class AvatarDemoViewModel: ViewModelBase
+{
+    
+}

demo/Ursa.Demo/ViewModels/MainViewViewModel.cs

@@ -25,6 +25,7 @@ public class MainViewViewModel : ViewModelBase
         Content = s switch
         {
             MenuKeys.MenuKeyIntroduction => new IntroductionDemoViewModel(),
+            MenuKeys.MenuKeyAvatar => new AvatarDemoViewModel(),
             MenuKeys.MenuKeyBadge => new BadgeDemoViewModel(),
             MenuKeys.MenuKeyBanner => new BannerDemoViewModel(),
             MenuKeys.MenuKeyButtonGroup => new ButtonGroupDemoViewModel(),

demo/Ursa.Demo/ViewModels/MenuViewModel.cs

@@ -12,6 +12,7 @@ public class MenuViewModel: ViewModelBase
         {
             new() { MenuHeader = "Introduction", Key = MenuKeys.MenuKeyIntroduction, IsSeparator = false },
             new() { MenuHeader = "Controls", IsSeparator = true },
+            new() { MenuHeader = "Avatar", Key = MenuKeys.MenuKeyAvatar, Status = "WIP"},
             new() { MenuHeader = "Badge", Key = MenuKeys.MenuKeyBadge },
             new() { MenuHeader = "Banner", Key = MenuKeys.MenuKeyBanner },
             new() { MenuHeader = "Breadcrumb", Key = MenuKeys.MenuKeyBreadcrumb },
@@ -59,6 +60,7 @@ public class MenuViewModel: ViewModelBase
 public static class MenuKeys
 {
     public const string MenuKeyIntroduction = "Introduction";
+    public const string MenuKeyAvatar = "Avatar";
     public const string MenuKeyBadge = "Badge";
     public const string MenuKeyBanner = "Banner";
     public const string MenuKeyButtonGroup = "ButtonGroup";