Panthalassa - release 1.2.1 - 1.18.2

Changelog:
-Fixes crash with Twilight Forest.
-Fixes FPS lag within Panthalassa.
--Reduced number of hydrothermal vents.
--Reduced number of entities.
-Portal frames can now be crafted.
-Corrected Loot Tables: Creatures should now correctly drop their corresponding display parts.
-Panthalassa Observatories should now correctly spawn in the intended locations.
-Structure processors are now working as inteneded.
-Added Megalodon Jaw display.
-Fix external (config) overspawning issues.
-Code optimizations