input: Write a python function to create a memory cloud in Minecraft with given dimensions and block types.
  assert MemoryCloud1(0, 0, 0, 10, 5, 2, 35, 0) is None
  assert MemoryCloud1(100, 50, -100, 20, 10, 5, 1, 1) is None
output: def MemoryCloud1(x, y, z, width, height, depth, block_type, block_data):
      import mcpi.minecraft as minecraft
      mc = minecraft.Minecraft.create()
      
      for i in range(width):
          for j in range(height):
              for k in range(depth):
                  mc.setBlock(x + i, y + j, z + k, block_type, block_data)