feat(misp-fleet-commander): Add Dockerized MISP Fleet Commander with provisioning and automatic student MISP instance discovery.

[romainkieffer]

MISP Fleet Commander

This tool is designed to remotely manage a constellation of MISP instances.
This will be especially useful for a Locked Shields style multi-instance setup.

Reference

https://github.com/MISP/MISP-Fleet-Commander