Implement Vertical Slabs

Still have some bugs such as waterlogging not working and not all 1.17 blocks have been added

src/main/java/tech/nevets/vplus/items/VPItemGroups.java

@@ -27,5 +27,9 @@ public class VPItemGroups {
     //Food Tab
     public static final ItemGroup FOOD = FabricItemGroupBuilder.build(
             new Identifier("vplus", "food"),
-            () -> new ItemStack((Items.ENCHANTED_GOLDEN_APPLE)));
+            () -> new ItemStack(Items.ENCHANTED_GOLDEN_APPLE));
+    //Vertical Slabs Tab
+    public static final ItemGroup VERTICAL_SLABS = FabricItemGroupBuilder.build(
+            new Identifier("vplus", "vert_slabs"),
+            () -> new ItemStack(Items.BRICK_SLAB));
 }