- Added messages.yml for all plugin messages with customizable prefix
- Added commands.yml for custom commands (discord, website, store, rules, heal, clearinventory)
- Added serverselector.yml for GUI server selector menu
- Added data.yml for persistent data storage (chat_locked, spawn location)
- Updated ConfigManager to load all config files
- Updated ChatLockManager to use data.yml instead of chatlock.dat
- Updated SpawnManager to use data.yml instead of spawn.yml
- Updated all commands to use messages.yml
- Updated listeners to use messages.yml
- Removed duplicate config files from root directory
- Added CONFIG_GUIDE.md documentation