title: vscode typescript: 'Add all missing imports' shortcut
body: <p>I am working on a typescript project (typescript3.x).</p>
  
  <p>I recently noticed the <code>Add all missing imports</code> when I click on the bulb which comes when I am using more than one types which are not yet imported as shown below:</p>
  
  <p><a href="https://i.stack.imgur.com/8f8nX.png" rel="noreferrer"><img src="https://i.stack.imgur.com/8f8nX.png" alt=""></a></p>
  
  <p>Is there a shortcut for the same?
  Or should I request it as a feature?</p>
  
  <p>Thanks in advance</p>