manager: migrate base project structure & deps

ModpackUpdater.Apps/ModpackUpdater.Apps.csproj

@@ -1,20 +1,33 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0-windows</TargetFramework>
-    <Nullable>enable</Nullable>
-    <ImplicitUsings>enable</ImplicitUsings>
+    <IncludeAllContentForSelfExtract>true</IncludeAllContentForSelfExtract>
+    <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
+    <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
   </PropertyGroup>
 
+  <ItemGroup>
+    <AvaloniaResource Include="Assets\**" />
+  </ItemGroup>
+
   <ItemGroup>
     <EmbeddedResource Include="Symbols\*.svg" />
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Pilz" Version="2.6.1" />
     <PackageReference Include="Pilz.UI" Version="3.1.1" />
-    <PackageReference Include="Pilz.UI.WinForms.Telerik.Symbols" Version="1.2.1" />
-    <PackageReference Include="UI.for.WinForms.Common" Version="2025.3.812" />
-    <PackageReference Include="UI.for.WinForms.Themes" Version="2025.3.812" />
+    <PackageReference Include="Pilz.UI.AvaloniaUI" Version="1.2.0" />
+    <PackageReference Include="Avalonia" Version="11.3.8" />
+    <PackageReference Include="Avalonia.Desktop" Version="11.3.8" />
+    <PackageReference Include="Avalonia.Svg" Version="11.3.0" />
+    <PackageReference Include="Avalonia.Themes.Fluent" Version="11.3.8" />
+    <PackageReference Include="Avalonia.Fonts.Inter" Version="11.3.8" />
+    <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
+    <PackageReference Include="Avalonia.Diagnostics" Version="11.3.8">
+      <IncludeAssets Condition="'$(Configuration)' != 'Debug'">None</IncludeAssets>
+      <PrivateAssets Condition="'$(Configuration)' != 'Debug'">All</PrivateAssets>
+    </PackageReference>
   </ItemGroup>
 
 </Project>