metal cutting enchantment

A new enchantment that deals more damage to metallic enemies. This can be done to combat iron, gold, and netherite armor. You can also deal more damage to iron golems. An new mobs with metal armor or are metallic in nature will also receive extradamage. I also think it important that this enchantment doesn't nullify the usability of those armor or detour people form using them. It should only simply give people an edge against those armor