feat: quality-4 armor and weapons as wardrobe cosmetics

- Add Item.IsCosmetic, IsCosmeticArmor, IsCosmeticWeapon and SlotType; quality-4 armor wears in the garment slot and weapons or shields in the matching accessory slot

- Skip cosmetic stats in Attributes.Recalculate and block compose and enchant on cosmetics

- Equip cosmetics without level, class or stat requirements and keep them in the wardrobe on store, equip and unequip

- List cosmetic garments in the accessory-style wardrobe sync (CoatWardrobe.SendExtras)

- Raise the client catalog payload cap to 65000 bytes