feat: support msbuild

[IvanJosipovic]

This pr shows how we can use MSBuild to get a list of project references and trigger the generation cli

<Target Name="GenerateAvaloniaExtensions" AfterTargets="ResolveReferences">
   <Exec Command="dotnet tool run avalonia-amd-gen --dlls=&quot;@(ReferencePath->'%(FullPath)')&quot; --projectPath=&quot;$(MSBuildProjectFullPath)&quot;" />
</Target>

Todo:

• Resolve exception enumerating ExternalTypes {"Non-virtual abstract method.":"Avalonia.IDataContextProvider"}
• Review performance and maybe implement hashing to check if dll changed?
• Add custom Target to NuGet Package?
• Install tool using dotnet-tools.json

More info, https://stackoverflow.com/questions/74488608/how-to-run-dotnet-tool-in-prebuild-phase-of-an-sdk-project

[gritsenko]

looks like it works

[IvanJosipovic]

looks like it works

It might be running the existing version from NuGet. I'm still experiencing an issue enumerating types on my end, seems reflection isn't happy after loading all the dlls. I haven't had a chance to dig into it.