title: (Flutter) Customize Dots Indicator and Animation in PageView
body: <p>Customize Dots indicator like this
  <a href="https://i.stack.imgur.com/5cRgq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/5cRgq.png" alt="enter image description here"></a></p>
  
  <p>I want to be able to customize dots as shown, and give a little animation</p>