A new /locate feature command

Well, we have /locate structure so i think it will be the perfect time to add, /locate feature! which will allow you to locate features like monster rooms, desert wells, sand disks, or even a beehive tree! It can also be useful for diagnosing world generation bugs in future testing versions! It'll be easier to just teleport to a dungeon or find a desert well without traveling JUST to find even one! but i think this proposal should fix all of that.