Aditions

• Added stair, slab and wall variant to all Concrete and Terracotta colors, Deepslate, Netherrack, End stone, Calcite, Dripstone, Smooth basalt and Quartz bricks
• Added slab and wall variant to Smooth stone, Cut sandstone and Cut red sandstone
• Added wall variant to Stone, Polished diorite, Polished andesite, Polished granite, Smooth sandstone, Smooth red sandstone, Prismarine bricks, Dark prismarine and Purpur