* Added BuildTests projects
* Added VerifyXamlCompilation build target
* Use TargetsTriggerByCompilation for XAML compilation
* Add *.binlog to gitignore
* VerifyXamlCompilation target: set NuGetPackageRoot
* Ensure WpfHybrid build test uses two markup compilation passes
* Fail build tests restore immediately if AvaloniaVersion isn't set
* Fix "could not extract MVID" for up-to-date builds
* Run VerifyXamlCompilation on CI
* Add FSharp build test