Implement GoodJob for cronjobs

[ajkiessl]

https://github.com/bensheldon/good_job

The documentation for this seems to indicate that Postgres is required, but if it's just using a db for a queue, I don't see why it wouldn't work with Mariadb.

This would be a nice replacement for all the k8s cronjobs (which are a little more difficult to handle).

Here's some example syntax:

Rails.application.configure do 
  config.good_job.cron = {
    clean_search: {
      cron: '0 2 * * *',
      class: 'CleanSearchJob',
      kwargs: { days_old: 90 }
    }
  }
end