Use SG NuGet package

NuGet.Config

@@ -6,6 +6,5 @@
     <add key="api.nuget.org" value="https://api.nuget.org/v3/index.json" />
     <add key="dotnet-eng" value="https://nuget.avaloniaui.net/repository/avalonia-devdeps/index.json" protocolVersion="3" />
     <add key="skiasharp" value="https://aka.ms/skiasharp-eap/index.json" />
-    <add key="tmds-dbus" value="https://www.myget.org/F/tmds/api/v3/index.json" />
   </packageSources>
 </configuration>

src/Avalonia.FreeDesktop/Avalonia.FreeDesktop.csproj

@@ -13,16 +13,12 @@
 
   <ItemGroup>
     <PackageReference Include="Tmds.DBus.Protocol" Version="0.13.0" />
-  </ItemGroup>
+    <PackageReference Include="Tmds.DBus.SourceGenerator" Version="0.0.2" />
-
-  <ItemGroup>
-    <CompilerVisibleItemMetadata Include="AdditionalFiles" MetadataName="DBusGeneratorMode" />
   </ItemGroup>
 
   <ItemGroup>
     <ProjectReference Include="..\Avalonia.Controls\Avalonia.Controls.csproj" />
     <ProjectReference Include="..\Avalonia.Dialogs\Avalonia.Dialogs.csproj" />
-    <ProjectReference Include="..\tools\Tmds.DBus.SourceGenerator\Tmds.DBus.SourceGenerator\Tmds.DBus.SourceGenerator.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
   </ItemGroup>
 
   <ItemGroup Label="InternalsVisibleTo">