title: EF Core and Visual Studio 2017: Add-Migration doesn't include new files into TFS source control
body: <p><code>Add-Migration</code> generates new files but doesn't include them into TFS source control - they are invisible for Check-in operation and are shown without lock sign on Solution Explorer.</p>
  
  <p>Is there the way to solve it?</p>
  
  <p>P.S. This all happens in project  <code>Sdk="Microsoft.NET.Sdk"</code> style. The question can be asked in more wide form: is there a way to "pick up" new files (created without Visual Studio) and include them to TFS automatically? </p>