Set up a daemon to manage Minion workers

[oalders]

We can use Daemon::Control for this (or whatever you prefer). The Minion args are documented at https://metacpan.org/pod/Minion::Command::minion::worker

On my VM I'm starting the workers via:

PERL_CARTON_PATH=/home/metacpan/carton/metacpan-api carton exec bin/queue.pl minion worker

One important flag would be --jobs. We'd just need to figure out what an appropriate default is for the VM vs one of the production machines.

[ranguard]

I'd have though you would NOT want it running on the dev machines automatically - should be started up / stopped for testing but nothing more?

[oalders]

Correct. Less services running by default on the VM is best. However, when we do start it on the VM it should default to 1 or 2 workers rather than 6 or whatever we want to run on the production machines.

[oalders]

We can use any of the Starman daemon scripts as a reasonable set of defaults to use when starting with this script.

[ranguard]

Fixed with #95