title: Circular progressbar
body: <p>I want to create a circular progressbar, like in this image below <br/><br/>
  <img src="https://i.stack.imgur.com/LdgHy.png" alt="Circle Progress Bar">
  <br/><br/>
  I don't know what the method that creates this progressbar is. And I don't know what assets should be prepared.</p>