title: Create a shortcut to toggle the Outline view in VSCode
body: <p>I've successfully created a key shortcut for outline.focus which displays the Outline panel. I'm looking for toggle behaviour.</p>
  
  <p><strong>Existing</strong>:</p>
  
  <pre><code>{
      "key": "ctrl+alt+o",
      "command": "outline.focus",
      "when": "editorTextFocus"
  }
  </code></pre>
  
  <p>Is it possible??</p>