Add Converters property to directory props to build converters from source for sample app

Author: michael-hawker

Directory.Build.props

@@ -9,6 +9,9 @@
     <ToolingDirectory>$(RepositoryDirectory)\tooling</ToolingDirectory>
     <EnableNETAnalyzers>true</EnableNETAnalyzers>
     <ToolkitExtensionSourceProject>$(RepositoryDirectory)\components\Extensions\src\CommunityToolkit.WinUI.Extensions.csproj</ToolkitExtensionSourceProject>
+    <ToolkitConvertersSourceProject>$(RepositoryDirectory)\components\Converters\src\CommunityToolkit.WinUI.Converters.csproj</ToolkitConvertersSourceProject>
+
+    <!-- TODO: See https://github.com/CommunityToolkit/Windows/issues/117 these should be removed unless needed by sample app or tests -->
     <ToolkitHelperSourceProject>$(RepositoryDirectory)\components\Helpers\src\CommunityToolkit.WinUI.Helpers.csproj</ToolkitHelperSourceProject>
     <ToolkitBehaviorSourceProject>$(RepositoryDirectory)\components\Behaviors\src\CommunityToolkit.WinUI.Behaviors.csproj</ToolkitBehaviorSourceProject>
     <ToolkitAnimationSourceProject>$(RepositoryDirectory)\components\Animations\src\CommunityToolkit.WinUI.Animations.csproj</ToolkitAnimationSourceProject>