Make the number of openings displayed configurable from the UI

Additionally, providing a setting less than June 24, like +1 day or +3 weeks works. It seems there is a max threshold.

Changing this to a feature request to make the number of openings displayed configurable from the UI.

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Booking future time is separate from amount of bookings displayed. Booking future time is respected.

The amount of openings displayed on the Bookable Calendar is static located at bookable_calendar/src/Renderer.php line 105

$query->range(0, 100);