title: Hook for customizing product image thumbnail
body: <p>I need a help on woo-commerce to override the cart product image thumbnail.<br>
  I am creating a plugin for customizing the product in the detail page and if we do "add to cart" it will be updated in the cart page with a customized thumbnail.</p>
  
  <p>If any hook is available for overriding the image, please let me know.</p>