MerchantRecipe: add copy constructor (#8703)

patches/api/0432-MerchantRecipe-add-copy-constructor.patch

@@ -0,0 +1,24 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Joo200 <github@joo200.de>
+Date: Tue, 20 Dec 2022 15:26:36 +0100
+Subject: [PATCH] MerchantRecipe: add copy constructor
+
+
+diff --git a/src/main/java/org/bukkit/inventory/MerchantRecipe.java b/src/main/java/org/bukkit/inventory/MerchantRecipe.java
+index afaa21b9347683fa373a938d9b1aa01c2058192a..39f9766a03d420340d79841197f75c8b1dd49f4a 100644
+--- a/src/main/java/org/bukkit/inventory/MerchantRecipe.java
++++ b/src/main/java/org/bukkit/inventory/MerchantRecipe.java
+@@ -91,6 +91,13 @@ public class MerchantRecipe implements Recipe {
+         this.specialPrice = specialPrice;
+     }
+ 
++    // Paper start - add copy ctor
++    public MerchantRecipe(@NotNull MerchantRecipe recipe) {
++        this(recipe.result.clone(), recipe.uses, recipe.maxUses, recipe.experienceReward, recipe.villagerExperience, recipe.priceMultiplier, recipe.demand, recipe.specialPrice, recipe.ignoreDiscounts);
++        this.setIngredients(recipe.ingredients);
++    }
++    // Paper end
++
+     @NotNull
+     @Override
+     public ItemStack getResult() {