Invidious (yewtu.be) embed

Replace YouTube embeds with yewtu.be embeds.

Shoutouts to Mohammed who contacted me on Telegram and helped me fix an issue with inner iframes on Tampermonkey.

Based on this script written by Backend.

Changes from Backend's script:

Now uses yewtu.be as the Invidious instance
Changed default autoplay behavior. By default videos will now only autoplay when 'autoplay=1' is already defined in the source YouTube embed.
The script now uses URLSearchParams for better handling of search parameters on the embeds.
The script will now use the 'listen=1' parameter when the embed has 0 or 1 defined as its width and height to save bandwidth
Fixed an infinite loop that would occur when an YouTube embed's hostname didn't start with 'www.'
Fixed the script not detecting youtu.be embeds
Fixed the script not working with Violentmonkey
Fixed the script breaking YouTube embeds on DuckDuckGo