Major Feature Redistribution
This update significantly restructures the premium/free feature distribution to provide more value in the free version while maintaining premium exclusivity for GUI and advanced features.

✨ New Free Features

• Multi-Currency System - Now available in free version with full support for custom currencies
• Currency Exchange - Exchange between different currencies with configurable rates
• Advanced Sell Commands - /sellhand and /sellall commands now free for all users
• Advanced Transaction Logging - Comprehensive transaction tracking and logging system

⭐ Premium-Only Features

• Shop GUI - Interactive shop interface with category browsing
• Sell GUI - Drag-and-drop item selling interface
• Block Interactions - Shop and sell block functionality
• GUI Customization - All GUI-related interactions and customizations
• Physical Currency - Withdraw currencies as physical items

Bug Fixes

• Fixed missing message keys for /shop help command
• Added comprehensive help messages for shop commands in both English and Arabic