title: how can i make bell notification icon animated in flutter
body: <p>I want to make an animation on a notification bell icon to make it rings like these animations: 
  <a href="https://icons8.com/animated-icons/bell" rel="nofollow noreferrer">https://icons8.com/animated-icons/bell</a>
  or one of these
  <a href="https://csshint.com/css-notification-bell-icon/" rel="nofollow noreferrer">https://csshint.com/css-notification-bell-icon/</a></p>
  
  <p>how this can be achieved with flutter?</p>