title: Custom Rounded appbar in flutter
body: <p>Screenshot of Customise Appbar :</p>
  
  <p><a href="https://i.stack.imgur.com/QrKAu.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/QrKAu.jpg" alt="enter image description here"></a></p>
  
  <p>I want to make a Custom app bar like in the photo
  Can anybody help me in creating this i had searched a lot but not found anywhere</p>