Ava12 migration

Author: StefanKoell

src/Directory.Packages.props

@@ -8,10 +8,10 @@
     <WarningsAsErrors>$(WarningsAsErrors);NU1506</WarningsAsErrors>
   </PropertyGroup>
   <ItemGroup>
-    <PackageVersion Include="Avalonia" Version="11.3.12" />
-    <PackageVersion Include="Avalonia.Desktop" Version="11.3.12" />
-    <PackageVersion Include="Avalonia.Diagnostics" Version="11.3.12" />
-    <PackageVersion Include="Avalonia.Themes.Fluent" Version="11.3.12" />
+    <PackageVersion Include="Avalonia" Version="12.0.0" />
+    <PackageVersion Include="Avalonia.Desktop" Version="12.0.0" />
+    <PackageVersion Include="Avalonia.Themes.Fluent" Version="12.0.0" />
+    <PackageVersion Include="AvaloniaUI.DiagnosticsSupport" Version="2.2.0" />
     <PackageVersion Include="CommunityToolkit.Mvvm" Version="8.4.0" />
     <PackageVersion Include="Microsoft.Windows.CsWin32" Version="0.3.269" />
   </ItemGroup>

src/RoyalApps.Community.Avalonia.InteropDemo/InteropDemo/InteropDemo.csproj

@@ -26,8 +26,7 @@
     <PackageReference Include="Avalonia.Desktop" />
     <PackageReference Include="Avalonia.Themes.Fluent" />
 
-    <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
-    <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" />
+    <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="AvaloniaUI.DiagnosticsSupport" />
     <PackageReference Include="CommunityToolkit.Mvvm" />
     <PackageReference Include="Microsoft.Windows.CsWin32">
       <PrivateAssets>all</PrivateAssets>