added recipe_data() and crafting_remaining_item() - for convenient crafting scripts.

src/main/java/carpet/fakes/IngredientInterface.java

@@ -0,0 +1,11 @@
+package carpet.fakes;
+
+import net.minecraft.item.ItemStack;
+
+import java.util.Collection;
+import java.util.List;
+
+public interface IngredientInterface
+{
+    List<Collection<ItemStack>> getRecipeStacks();
+}

src/main/java/carpet/fakes/RecipeManagerInterface.java

@@ -0,0 +1,12 @@
+package carpet.fakes;
+
+import net.minecraft.recipe.Recipe;
+import net.minecraft.recipe.RecipeType;
+import net.minecraft.util.Identifier;
+
+import java.util.List;
+
+public interface RecipeManagerInterface
+{
+    List<Recipe<?>> getAllMatching(RecipeType type, Identifier output);
+}