Hopo Better Ruined Portals

--- Advancement and Better Generation Update ---

♦ Neoforge support, YAY!!!

♦ Added a license ♦ Hello again, this is the last update including fixes and some other small cool stuff, in the meantime, I'll wait for 1.21 probably :D ♦ Fixed some weird generation causing portals and other structures pieces to look like they float in the middle of the air ♦ Improved the generation of how the nether corruption, some features and small ruins are also improved, giving a better look ♦ Improved the loot of the suspicious gravel around the portal ♦ Removed portals generation on plains, instead, now they do on near jungles ♦ Added an advancement "Myth or Legend?" When you find the new big portal ♦ Improved /locate command, will be good in the future...