More info/documentation about Mercure & Drupal

This module doesn't aim to do much more than it currently does: registering service definitions the way it is done by the Symfony bundle.
Other modules can provide the higher-level niceties you mention (Views, an overview, ...).
I'm happy to see that drupal/inotify → already takes a stab at this.
(In the future we might be open to adding such things as a submodule.)

For documentation on how to use/configure this module I think the Symfony Mercure Bundle documentation is the best resource.
For setting up a Mercure Hub, refer to the official installation guide.
And of course the getting started guide.

It's a relatively young module and Mercure is being used more in Symfony/Api-Platform projects.
At the moment I'm not aware of other Drupal modules using Mercure so I can't provide a starting point unfortunately.
I'll keep this open for others to promote their work 🤞