Support pub/sub "messenger like" #236
Description
We want to add a pub/sub component (on top of messenger ?) that would allow to "dispatch" a message and be consume by different "worker".
Goal is to broadcast a message to a cluster of server and all those server will execute it.
A use case could be to regenerate a file cache entry after something to change in a CMS.
One of the project is using a custom implementation base on "enqueue/enqueue" and we want to have something more resembling "symfony/messenger".
Enqueu is a bit too low level, using string/json a the message instead of using php object.
Best result would be to have a specif queue in messenger that way it would be completely seamless but have a different "component" that would have it's on configuration is ok if too complex/impossible to do in messenger.
Having redis as the first adapter and only adapter for now is ok.