Immortality

Added /immortal command system Added /immortal global toggle Added /immortal void setting Added /immortal set for multiple players Added /immortal get to check status Added /immortal reload to reload config Fixed Totem of Undying compatibility Added permission system using Fabric Permissions API Admin-only control for sensitive commands Added red “No permission” message Improved command safety checks Cleaned up command system structure Improved death handling logic Added proper void detection system Improved config stability and loading Optimized server-side performance