[Mechanic] Guild tier loot limiter

The guild tier loot limiter limits the best loot a player can loot based on their guild tier. By default, players are limited in the following ways (assuming you're using the default settings):

Guild tier 1 (default): up to tier 10 items, level 100 mobs

Guild tier 2: up to tier 20 items, level 200 mobs

Guild tier 3: up to tier 30 items, level 300 mobs

Guild tier 4: up to tier 40 items, level 400 mobs

Guild tier 5: up to tier 50 items, level 500 mobs

Guild tier 6: up to tier 60 items, level 600 mobs

Guild tier 7: up to tier 70 items, level 700 mobs

Guild tier 8: up to tier 80 items, level 800 mobs

Guild tier 9: up to tier 90 items, level 900 mobs

Guild tier 100: up to tier 100 items, level 1000 mobs

How this works & edge cases

Since the guild tier limits the tier of the item that players can kill, this means that players can only spawn mobs up to a certain level as the level of the mob is based on the gear the player is wearing. Should players go hunt mobs with higher level friends, the loot that they will get will be of a lower level than their friends'. Combined with the soulbind enchantment, this curbs the issue of powerleveling quite a bit and allows admins to not have to worry about visitors reaching the maximum tier within a few minutes of joining the server / new players instantly getting loads of diamond tier items. Additionally, it gives players a deeper connection with their loot, as it makes it belong to them and only them.