feat: add verbose mode to cron.php

[skjnldsv]

15:47 [admin@workstation-m] ~/git/server% php cron.php --help
Description:
  Run the background job routine

Usage:
  php -f cron.php -- [-h] [--verbose] [<job-classes>...]

Arguments:
  job-classes                  Optional job class list to only run those jobs

Options:
  -h, --help                 Display this help message
  -v, --verbose              Output more information