Improvements to the Trident

Tridents would be found in Ocean Monuments exclusively, either dropped by the Elder Guardian (which would now be an official boss, with on-screen health-bar, harder to defeat etc) or found in the centre of the Monument. This would create more of an incentive to go in monuments, and make the Trident more special. To add to this Tridents would now be able to use Sword and Bow Enchantments like Sharpness (for melee usage), Power (for long range), Knockback/Punch,  Looting, etc.