Armor Statues Datapack

Added a new 'states' system to Armor stand books.  These can be found on the first page and include Repeat, Undo, and Redo.

• Repeat - allows you to perform the same action multiple times.
• Undo/Redo - allows you to revert multiple actions.  The number of times that actions can be undone is based on the Max Undo States.  This resets every time a different armor stand is edited.

Saved books now label if they have a saved pose in their Lore.  You can name a saved pose by first naming the Armor Stand.

Added Item Frame Animators.

• Disabled by default.
• Allows players to place books(with a saved pose) into item frames to animate armor stands.  You can animate them by placing redstone dust in the space with the item frame, then powering it.
• Animates the nearest armor stand within 8 blocks.
• Animations won't play unless there's a player within 35 blocks of the item frame.

Added Admin Menu features accessed with /function armor_statues:admin

• Added 'Max Undo States': Sets the maximum number of times the armor statues book can Undo actions. Defaults to 10.
• Added 'Item Frame animation time': Sets the amount of time that item frames can be detected and animate armor stands. (16 is recommended) Defaults to 0.