BE: Add Closed Library Date Management to Service Point for Hold Shelf Expiration

Purpose: Add Closed library date management menu to service point for hold shelf expiration date calculation (see UIREQ-246 for details).

User story:
As a librarian
I want to be able to set what happens when a hold shelf expiration date/time falls when the service point is closed
So I can communicate that to the patron

Scenarios:

1. Scenario
   • Given a service point at Settings > Tenant > Service points
   • When Pickup location = Yes
   • Then "Closed library date management for hold shelf expiration expiration date calculation" menu should display
2. Scenario
   • Given Hold shelf expiry period
   • When specified in days, weeks or months
   • Then "Closed library date management for hold shelf expiration expiration date calculation" menu should contain:
     • Keep the original date
     • Move to the end of the previous open day
     • Move to the end of the next open day
3. Scenario
   • Given Hold shelf expiry period
   • When specified in minutes or hours
   • Then "Closed library date management for hold shelf expiration expiration date calculation" menu should contain:
     • Keep the original date/time
     • Move to the end of the current service point hours
     • Move to the beginning of the next open service point hours

See attached mockup