Roll20 Extended - Advanced Inventory & Categories di BattleEye

New Features:
- Custom categories for inventory organization
- Complete trait management system with categories
- Visual source indicators for traits (racial, class, feat, background, item)
- Drag-and-drop reordering within and between categories
- Attunement tracking with visual indicators (⚡)
- Collapsible items and categories for clean viewing
- Edit mode toggle for quick modifications
- Beautiful re-styled UI matching Roll20's design
- Light and dark theme support
- Auto-save to Roll20 character sheet

Perfect for D&D 5e players who want better organization!