New brick variants

Cracked Brick Block - basically exactly what it sounds like, smelt a brick block in a furnace to get it.

Mossy Brick Block - again, it’s exactly what it sounds like, same crafting recipe as mossy stone bricks but with brick blocks instead.

Mossy Blackstone Brick - this could potentially be 2 different blocks as the nether has twisting and weeping vines, craftable in the same way as normal mossy blocks but with the blocks substituted with blackstone bricks and the vines substituted with their twisting and weeping counterparts.