Just Graves

✨ Added

• Implemented a full grave system storing player inventory and XP on death.
• Added the /graves command to list all graves with coordinates and timestamps.
• Integrated with Collective for reliable item serialization.
• Configurable grave protection time to prevent looting by others for a set duration.
• Optional head drop feature on player death (enabled by default).
• Visual and audio feedback when opening graves.
• Server-synced configuration via config/justgraves/config.yml including language, protection time, and head drop settings.

🛠️ Changed

• Initial release – no previous behavior to change.

🐛 Fixed

• Initial release – no previous bugs to fix.