Added a new command: /d item! This command assigns a saved Dexterity display to an item that players can break or place.

Example:
1. /d schem load flowers (Schematic file can be found on the discord). In general, the display the item is based off of must be labelled (/d save).
2. Hold a flower pot from creative mode
3. Run /d item - The item should drop from where the display was
4. Placing this flower pot item should now place the flowers schematic instead!

Permissions:
dexterity.command.item for /d item command
dexterity.click necessary for player to be able to break the display they placed
Make sure to test that your specific world management plugins are compatible before giving players these items. More sophisticated plugin hooks can be added in the future.