title: Draw shadow layer on vector drawable icon Android
body: <p>I'm using basic vector icon from android vector asset :</p>
  <p><a href="https://i.stack.imgur.com/UNSuh.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UNSuh.png" alt="enter image description here" /></a>
  <a href="https://i.stack.imgur.com/GpcHn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/GpcHn.png" alt="enter image description here" /></a>
  <a href="https://i.stack.imgur.com/Z1aL1.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Z1aL1.png" alt="enter image description here" /></a></p>
  <p>I would like to create a shadow effect around my icons but everything I found seems not working.
  I want to keep the vector as original and only add shadow layer as one we can create with <code>Paint</code></p>
  <p>How can it be done for any image ?</p>