Disc Rack

The Disc Rack is a storage block able to hold music discs.

Up to 9 discs can be placed in the Disc Rack. It can be interacted with in different ways:
 * Right-click on an empty slot with a disc in hand to place the disc in that slot.
 * Right-click the Disc Rack without a disc in hand, or right-click a full disk rack, to open a GUI.
 * Sneak-right-click a disc in the rack with an empty hand to remove that disc.

The Disc Rack's permitted-contents are adjustable via a config line.

A Disc Rack can be rotated on the wall by right-clicking with a screw gun. Sneak right-clicking will rotate the disc rack on the floor and ceiling.