title: When opening files with external app, how to open them in the same IDE instance?
body: <p>I am using Visual Studio Code Insiders (daily builds) since it is the only version that supports Tab view for opened files.</p>
  
  <p>I am opening my files using FileZilla directly from the FTP and everytime I open a new file. VS Code opens up a new app window with the new file.</p>
  
  <p>Is there a way for me to tell the editor to open every new file in a separate tab in the current window?</p>