How to write a chrome plugin to notify you about the start of a stream on YouTube gaming?

Question

YouTube

I don’t understand much about this .. Google didn’t give a sane answer, everything is for twitch, and the rest is only common for YouTube .. That is, there is no personal plug-in for people to install for themselves and immediately know about a person’s stream. for example, the plugin would be called "Uncle Petya's stream notification" a person follows the link, installs the plugin and bam, at the time of the start of the stream, the notification "Uncle Petya started streaming" in his browser (well, the link for example)
here the question is not to tell me about "Youtube bell" Just the same, this "bell" works in such a way that it is much faster to find out by chance

Answer 1

hire a proger

Answer 2

The bell is called, right on YouTube)