Hopo Better Mineshaft

--- Tricky Trials Moment --- ♦ 1.21 Support ♦ Renamed folder names, for the latest 1.21 update ♦ Increased slightly the generation of mineshaft, finding mineshafts should be easier now (feedback change, thank you! if you wanna send feedback, you can always do so by joining my discord server) ♦ Added 2 more mineshaft types, lush and dripstone types. As the name says, these will be generated in his respective biomes. It can be pretty small, but kinda common to find. ♦ Replaced my old poison skeleton, for the "Bogged" ♦ Mineshafts now generate rarely with the Bogged with some slight buffs (won't spawn again) ♦ Improved mineshaft speed generation, once again, changing the "size" value in my .JSON file ♦ Smooth out deepslate mineshaft, reducing some blocks generation, adding tuff bricks ♦ Fixed mineshaft being waterlogged, thanks Mojang ♦ "Mineshafter" advancement requires the two new mineshafts.