Add package reference

Author: jjonescz

src/NuGet.Core/NuGet.CommandLine.XPlat/NuGet.CommandLine.XPlat.csproj

@@ -17,6 +17,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.DotNet.ProjectTools" />
     <PackageReference Include="Microsoft.Extensions.CommandLineUtils.Sources" PrivateAssets="All" />
     <PackageReference Include="Microsoft.Build" ExcludeAssets="runtime" />
     <PackageReference Include="Spectre.Console" />