Add local EBT shipper

[afharo]

Summary

This PR adds an example plugin that registers an EBT shipper that writes all the events to the local ES.

It's intended for development purposes. With this plugin devs can look realtime at their local discover all the events their local Kibana is generating.

Just add the dataviews ebt-kibana-server/ebt-kibana-browser to start exploring.

For maintainers

• [x] This was checked for breaking API changes and was labeled appropriately