JetAppointments Booking for Elementor 2.1.0

* UPD: Translation files;
* FIX: Limited range from current date option behavior;
* FIX: Correctly handle time limits on mobile timepicker;
* FIX: Avoid errors in appointments dashboard in some cases;
* FIX: Slot do not became available after cancelling appointment.

* UPD: Minor improvements in the Apoinmetns list UI/UX;
* FIX: Custom schedule overriding logic;
* FIX: Timepicker does not show already booked time.

* ADD: Allow to export appointments;
* ADD: Macros `Custom DB Column Value` to get the data from custom DB columns in Workflows;
* UPD: Compatibility with new WooCommerce REST API checkout;
* FIX: Minor Workflows UI bugs;
* FIX: Service meta macros inside Workflows.