Add support for YouTube mentions

[ChunkyProgrammer]

YouTube now supports @ mentions.

The base url for this is https://www.youtube.com/@

Ex for @ mrbeast
https://www.youtube.com/@mrbeast

[gregjacobs]

Hey, thanks for the info, and this would be a good addition. Unfortunately I don't know when I can get to this at this moment, but PRs definitely welcome!

[gregjacobs]

Added in v4.1.0. Thanks for reporting!