title: QML Editable Tab title within TabView on double-click
body: <p>Is it possible to achieve a possibility of editing title of a tab within TabView after double-click it? I mean exactly something as follows.</p>
  
  <p><a href="https://i.stack.imgur.com/ZNI9t.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ZNI9t.gif" alt="enter image description here"></a></p>
  
  <p>I had a look at Tab, TabView and TabBar documentation, but I didn't find anything which could help to implement mentioned functionality.</p>