Auto Link Previews

Usage: Add `auto-link-preview` attribute to any <a> tag.
Uses thum.io to automatically fetch website screenshot.
Optionally set its value to a thumbnail URL of your choosing.
Requires: GSAP (for x coordinate thumbnail position tracking animation)
Works with both :focus and :hover states.
Devices: window.matchMedia("(hover: hover) and (pointer: fine)").matches;