YouTube NO MIXES per Henai6

When opening a mix on YouTube, the link gets modified to instead be a link to the video. This way the user can listen to the music they want, without other arbitrary musing being added to a queue, and creating your own queue becomes easier.

About license, I chose the first one in the list as it sounds open. This extension was almost entirely written by ChatGPT 3.5, so I can barely claim to hold the rights to it.