Takes a bunch of files in /etc/hosts.d/* and compile them into a /etc/hosts file.
It will watch the config directory for any change and refresh the hosts file.
None :( (not yet at least)
There are no package available yet, just a binary that you can run with systemd, see the example file.
You simply have to copy the file to /etc/systemd/system/, run systemctl daemon-reload and systemctl enable --now gohostsd.service to both enable and start the service.