Inject FabricRecipeExporter at runtime

Fixes #256

Author: Su5eD

fabric-data-generation-api-v1/src/main/java/net/fabricmc/fabric/mixin/datagen/recipe/RecipeOutputMixin.java

@@ -0,0 +1,9 @@
+package net.fabricmc.fabric.mixin.datagen.recipe;
+
+import net.fabricmc.fabric.api.datagen.v1.recipe.FabricRecipeExporter;
+import net.minecraft.data.recipes.RecipeOutput;
+import org.spongepowered.asm.mixin.Mixin;
+
+@Mixin(RecipeOutput.class)
+public interface RecipeOutputMixin extends FabricRecipeExporter {
+}

fabric-data-generation-api-v1/src/main/resources/fabric-data-generation-api-v1.mixins.json

@@ -8,6 +8,7 @@
     "ModelProviderMixin",
     "loot.BlockLootTableGeneratorAccessor",
     "loot.BlockLootTableGeneratorMixin",
+    "recipe.RecipeOutputMixin",
     "recipe.AllCraftingRecipeJsonBuildersMixin",
     "recipe.ComplexRecipeJsonBuilderMixin",
     "recipe.SmithingTransformRecipeJsonBuilderMixin",