Autoplay on page load

[YumYummity]

What's the problem this feature will solve?

By default, when you open a youtube page, it'll start to autoplay the video when it's loaded.

Describe the solution you'd like

A toggle at the start of the userscript, defaulting to autoplay = true;

Additional context

You can use var src = https://www.youtube.com/embed/${videoId}?enablejsapi=1&autoplay=1`;`
Additionally, I see <iframe id="aab-embed" width="100%" height="100%" src="${src}" allow="autoplay"></iframe> which appears to try to use autoplay; this isn't enough (you need to load the script with autoplay=1)