Implement complete Augmentation & Item Leveling System

Major Features Added:
- Complete Augmentation System with 17 augmentation types
- Item Leveling System with XP progression
- Player Level System with XP tracking
- Auto-Enhancement for all items (Level 1, no augmentations)
- Demo system with 10 pre-configured items
- Beautiful lore display with slot visualization
- Level-based slot unlocking system
- Legacy system cleanup and deactivation

New Commands:
- /augment (create, add, remove, info, levelup)
- /demo (1-10, all, random, list)
- /playerlevel (info, add, set)
- /convert (hand, all)

Technical Implementation:
- EnhancedItem class with NBT persistence
- AugmentationType enum with 17 types
- ItemLevelingSystem with XP curves
- PlayerLevelManager with progression
- Auto-enhancement listeners for all item sources
- Item leveling through usage (mining, combat, crafting)
- Rarity-based max levels and slot limits

plugin.yml

@@ -9,6 +9,22 @@ commands:
   testsmithchest:
     description: Spawns a weaponsmith chest for testing
     usage: /testsmithchest
+  augment:
+    description: Manage item augmentations
+    usage: /augment <create|add|remove|info|levelup>
+    aliases: [aug, enhance]
+  playerlevel:
+    description: View and manage player levels
+    usage: /playerlevel [player] [info|add|set] [amount]
+    aliases: [plevel, level]
+  demo:
+    description: Get demo items with pre-configured augmentations
+    usage: /demo [1-10|all|random|list]
+    aliases: [demoitems, examples]
+  convert:
+    description: Convert regular items to Enhanced Items
+    usage: /convert [hand|all|help]
+    aliases: [enhance, upgrade]
     
 permissions:
   levelcraft.admin: