SPIGOT-4283: Allow setting recipe groups

By: md_5 <git@md-5.net>

paper-server/nms-patches/ShapelessRecipes.patch

@@ -11,7 +11,7 @@
  
  public class ShapelessRecipes implements IRecipe {
  
-@@ -20,6 +24,20 @@
+@@ -20,6 +24,22 @@
          this.ingredients = nonnulllist;
      }
  
@@ -20,6 +20,8 @@
 +    public org.bukkit.inventory.ShapelessRecipe toBukkitRecipe() {
 +        CraftItemStack result = CraftItemStack.asCraftMirror(this.result);
 +        CraftShapelessRecipe recipe = new CraftShapelessRecipe(result, this);
++        recipe.setGroup(this.b);
++
 +        for (RecipeItemStack list : this.ingredients) {
 +            list.buildChoices();
 +            net.minecraft.server.ItemStack stack = list.choices[0];
@@ -32,7 +34,7 @@
      public MinecraftKey getKey() {
          return this.a;
      }
-@@ -127,11 +145,11 @@
+@@ -127,11 +147,11 @@
              packetdataserializer.a(shapelessrecipes.result);
          }