Create a better exception message when Quartz is used

[lordofthejars]

Description

With a pure programmatic Quartz approach, with a code like:

@ApplicationScoped
public class PeriodicTask {

@Inject
Scheduler quartz;

public void start() throws SchedulerException {
final JobDetail job = newJob(MyJob.class)
.withIdentity("questions", "millionaire")
.build();

final SimpleTrigger trigger = newTrigger()
.withIdentity("questionsTrigger", "millionaire")
.startNow()
.withSchedule(
SimpleScheduleBuilder.simpleSchedule()
.withIntervalInSeconds(20)
.withRepeatCount(5))
.build();

quartz.getListenerManager()
.addTriggerListener(new EndTriggerListener("EndTrigger"),
keyEquals(triggerKey("questionsTrigger", "millionaire")));
quartz.scheduleJob(job, trigger);
}
}

You get the next exception:

Caused by: java.lang.IllegalStateException: Cannot produce org.quartz.Scheduler - Quartz scheduler is disabled or no schedules were found
	at io.quarkus.quartz.runtime.QuartzScheduler.produceQuartzScheduler(QuartzScheduler.java:69)

When you add the next property:

quarkus.quartz.force-start=true

Then everything works as expected, so I think that it would be nice to have a better error message saying, I couldn't generate the Scheduler, maybe you have not set the property to true? So people can figure out quickly what is the problem.