title: How to do sliding panel in Flutter?
body: <p>I am building proof of concept on Flutter and trying as much as possible copy existing app. Our current app has sliding panel aka drop down at the top of the list, is there any way to do same behaviour in Flutter?</p>
  <p><a href="https://i.stack.imgur.com/pDvFN.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/pDvFN.gif" alt="Current behaviour GIF" /></a></p>