title: Style part of text in TextField
body: <p>I'm implementing a custom text field and I would like to style certain keywords (namely hashtags) differently than the rest of the text as the user type them in.</p>
  
  <p>Kind of like this:</p>
  
  <p><a href="https://i.stack.imgur.com/stYoS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/stYoS.png" alt="enter image description here"></a></p>
  
  <p>Is there a way to do that in Flutter ?</p>