Add docs and configurations for how to run hyscale as a daemon #4
Description
Per #3 there's a desire to have some support for demonizing hyscale.
I'd rather not support the racy pidfile universe though, as seen in the PR it's for example giving up when in trouble and rm'ing the pidfile while the process is still running.
Let's instead add docs and configs/install scripts/whatever for:
- how to run it under launchd
- how to run it under systemd
- how to run it under nssm (or similar)
goreleaser can probably help us make installable packages covering systemd quite quickly.