Add events support [enhancement]

[danielbodart]

This is a feature request, it would be great if hyper support events much like docker.

https://docs.docker.com/reference/api/docker_remote_api_v1.20/#monitor-docker-s-events

Ideally it would be available in :

1. The client much like 'docker events ...'
2. The REST API like 'GET /events...'

This would allow tools like Registrator and Connectable which can be combined with tools like consul to create compose-able infrastructure.

[gnawux]

Thank you @danielbodart , we will evaluate it first :)