Treasures of the dead

Changes

• The logic of treasure or skeleton camp spawns from adventure items has been changed: The new system involves loading a chunk before spawning a treasure or a skeletons crew camp, so the latter will not spawn in the bedrock. This also allows you to create maps that are thousands of blocks away from you;
• Changed the base value of the randomAdventureItemDistanceInChunks parameter in treasures_of_the_dead.toml. (8 -> 16);
• Fixed a critical bug where the skeleton crew camp could not find a position to spawn skeletons and caused an overflow and crash;