Add simpleBlockWithItem for data gens (#9170)

src/main/java/net/minecraftforge/client/model/generators/BlockStateProvider.java

@@ -188,6 +188,11 @@ public abstract class BlockStateProvider implements DataProvider {
         itemModels().getBuilder(key(block).getPath()).parent(model);
     }
 
+    public void simpleBlockWithItem(Block block, ModelFile model) {
+        simpleBlock(block, model);
+        simpleBlockItem(block, model);
+    }
+
     public void simpleBlock(Block block, ConfiguredModel... models) {
         getVariantBuilder(block)
             .partialState().setModels(models);