Hopo Better Underwater Ruins

--- Enchants changes & One new desing too! --- ♦ If you see the other latest hopo mineshaft update, well, you'll know it! 1.21 bring lots of changes to enchantments, and since some of my loot tables randomize enchants, this also counts the treasure enchantments ones, like the swift sneak, soul speed, etc, being too OP and breaking the survival experience, thanks Joji and the many other members for reporting this on my discord. ♦ Changes on some loot tables, improving it and nerfing some. ♦ And an extra gift, added a new structure variation to the underwater city, this one use the new trial spawners