Ooh Shiny!

Major Features:

• Category completion commands: Execute console commands when players complete all loots in a category
• Per category claim permissions: oohshiny.claim.category.<category> for granular access control
• Multiple rewards can now be stored inside a single oohshiny loot
• Consolidated documentation into WIKI.md

Permission System:

• Restructured permissions to oohshiny.command.* format
• Added oohshiny.admin wildcard permission
• Backward compatible with old permission nodes

Config Structure:

• Moved completion commands inside categories for better organization
• Automatic migration from old format

Commands Added:

• /oohshiny create <category>
• /oohshiny completion add <category> <command>
• /oohshiny completion remove <category> <index>
• /oohshiny completion list <category>