aspnetcore/eng/empty.proj

<!-- eng\common\build.ps1 fails without a project to build, so we give it this empty project to satisfy its desires -->
<Project>
  <Import Project="Sdk.props" Sdk="Microsoft.DotNet.Arcade.Sdk" />
  <Import Project="Sdk.targets" Sdk="Microsoft.DotNet.Arcade.Sdk" />
</Project>