Added more item tooltip stuff

[Tanguygab]

#150
hide_tooltip, enchantment_glint_override, rarity, tooltip_style and item_model

Example:

items:
  testItem:
    slot: 0
    material: DIRT
   
    # 1.20.5+
    hide_tooltip: false
    enchantment_glint_override: true
    rarity: EPIC
    
    # 1.21.2+
    #tooltip_style: <a NamespacedKey, I don't have any example for that>
    item_model: minecraft:enchanted_book

[Tanguygab]

From Discord: for the placeholders and arguments, I feel like there's no downside in having that available
Unless there's any issue with that, I don't see why we couldn't allow placeholders to be used there
misunderstood, my bad, I'll add support