the priority of the task (higher runs earlier). It must be above
AUTO_UPGRADE_STARTUP_TASK_PRIORITY (10) for the banner to print before the automatic upgrade
prompt and upgrade.
an optional FIGlet font name to use for the banner, defaults to "standard".
Build the ascii banner StartupTask.
A consumer opts in by passing the result of this function in the
serviceProvidersarray argument of launchMultiCommandCLI/launchSingleCommandCLI (or viaBaseCLI.addStartupTask) - there's no default/automatic banner registration.