(Twitch) Announce newly scheduled streams

[MattTheDev]

1. When scheduled.
2. X minutes before scheduled stream is set to start.
3. When cancelled.

Will need to do the following:

1. Create new Twitch accessor function for getting a channels scheduled streams.
2. Add 2 new tables to DB - ScheduledStreams and ScheduledStreamsQueue
3. Modify Creator table to add a column for "MonitorSchedule" with boolean true/false value.
4. Add new Scheduled Stream channel configuration item.

[MattTheDev]

Initial Skeleton in place for ScheduledStream table and the add command. Next stream (11/19/2023) we will be working on the scheduling of alerts for new scheduled streams!