Item Flags are used to show/hide certain elements of an Item's information.
Example config format:

item-flags:
  - HIDE_ATTRIBUTES
  - HIDE_ENCHANTS

Available Flags:
    HIDE_ATTRIBUTES - Setting to show/hide Attributes like Damage
    HIDE_DESTROYS - Setting to show/hide what the ItemStack can break/destroy
    HIDE_DYE - Setting to show/hide dyes from coloured leather armour
    HIDE_ENCHANTS - Setting to show/hide enchants
    HIDE_PLACED_ON - Setting to show/hide where this ItemStack can be build/placed on
    HIDE_POTION_EFFECTS - Setting to show/hide potion effects on this ItemStack
    HIDE_UNBREAKABLE - Setting to show/hide the unbreakable State