title: Hide/Show side editor in VS Code?
body: <p>I love the editor splitting in VS Code. But I'm also used to Xcode, where the Assistant Editor can be opened/closed, or rather hidden/shown, maintaining what it last showed. (okay technically that may not be true but just imagine it is, or just ignore that and move on with my actual question haha)</p>
  
  <p>Could I possibly hide/show side editors without closing and then having to reopen all their tabs? Like say I have File A on the left and File B on the right and I want to focus on just A, so I want to hide B on the right but then be able to show it again without having to explicitly select File B and open it to the right?</p>
  
  <p>Or the more complex and cooler use would be if I have Files A &amp; B &amp; C open in tabs on the left, and Files D &amp; E &amp; F &amp; A (two instances of A, for good measure) on the right, and I want to hide the whole right panel and then with a single command show it again, without having to open those tabs?</p>
  
  <p>"Hide all but currently focused editor" or something like that.</p>
  
  <p>Does this exist?</p>