Hopo Better Ruined Portals

--- Corruption improvements and loot changes --- ♦ Improved how the corners of lush, dripstone and deepslate portals, look, also changed the distribution of how this structures generate. This is beacause i feel it was to common to find one. So now they will be more special ♦ Improved how the corruption in general looks, it looks more terrified in my opinion and really show how the nether tries to consume the overworld ♦ Changed what kind of loot you are going to find in the "piglin ruin structure", chests fit more with a vanilla style, and some piglin brutes, drop better loot in that structure. ♦ Added some hidden barrels around the piglin ruin structure.