* Add heap tracking support to YouTube embeds
The shortcode has been updated to bootstrap the YouTube API once,
even if there are mutiple embeds on the same page.
Currently supports two events (Video Play and Video Paused) with
attributes for the video id, page path, and page title.
* Update layouts/shortcodes/youtube-embed.html
Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com>
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Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com>