title: add reference to a file from a different team project
body: <p>I have 2 team project in Visual Studio that have some shared code between them. </p>
  
  <p>Is it possible to have a reference or some kind of link from 1 team project to the other?</p>
  
  <p>Notice that 1 team project may be mapped to one folder and the other to another folder where they both don't have shared path so that making a relative link wont cut it. Thanks!</p>