Added

• Interactive GUI system: New chest-based interface for managing features.
  • Accessible via /cg (without arguments).
  • Categorized into Workstations (Crafting, Anvil, Furnace, etc.) and Portals (Nether, End).
  • Visual indicators: Green Wool for enabled, Red Wool for disabled.
  • Automatic pagination and centered item layouts.
• Added a "Back to Main Menu" navigation option in all sub-GUIs.

Changed

• Command /cg now opens the GUI for players; /cg help remains chat-based.
• Upgraded project version to 1.4.0.
• Refactored CraftGuardCommand to integrate with the new GUIManager.