[Feature Requests] Key requirement option for retriggering Key Item Mechanic

Current behaviour: Key Item Mechanic continues to take key after 1st trigger.

Wanted behaviour: Key Item Mechanic ONLY takes key when first triggered, and does not take key when retriggering. This can be added as an option, and is player-specific, not party-wide.

This is especially useful for dungeon's loot chests, and I think should be added ASAP :)