title: Add custom button to the selection's tooltip in Outlook
body: <p>I've created my own add-in for Outlook with VueJS.
  In order to communicate with my plugin I need to add custom button to the tooltip, when user selects something in an email reply.
  Is there any way to do it with manifest file? Or... ?</p>
  
  <p>Thanks.</p>
  
  <p><a href="https://i.stack.imgur.com/aTeFI.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/aTeFI.jpg" alt="enter image description here"></a></p>