Use Messenger for Doctrine EventListener

[boskos-q]

In the docs we have option to use enqueue/fs with Doctrine events to trigger async/non blocking operations (insert/update/remove).

As we currently have option to use Messenger out of the box for populating indexes, it would be nice to see out of the box option to use Messenger as well for these Doctrine events.

[SparkDragon]

This feature would be useful for me too :) Someone motivated to develop it ?

[khal3d]

This would be very useful for us as well. We've had cases where critical pages went down due to ElasticSearch failures. If these Doctrine events were handled via Messenger in the background, it would greatly reduce the risk and improve stability.