SkyBlock Dark mode

New content (with-out Respackopts)

• Added dark variant blocks in the Draconic Altar room of the end
• Added compatibility with Stay True resorce pack in some areas

Custom textures (with Respackopts)

• Added soulfire as a possible fire texture
• Changed gray lava and added new darker lava

Fixes

• Custom lava textures not working
• Missing blocks in crimson isle
• Changed some blocks in new jerry's island