Add Public Holidays into the Call Queue Schedule

I understand that we have custom rules in place but when you are a big organisation with multiple call queues in different time zones the config can become a mess.

We have simplified our call queues by using the overflow features instead of custom rules.

This has set our routing in place and now we want a feature to be able to specify when the office will be closed.

We should be able to input public holidays in the schedule, automatically setting that call queue to not available on the specific days.