Implemented the Mob Sacrifice Array.

Needs some cleaning up + added visuals, but appears functional.

src/main/java/WayofTime/bloodmagic/api/impl/recipe/RecipeSacrificeCraft.java

@@ -0,0 +1,48 @@
+package WayofTime.bloodmagic.api.impl.recipe;
+
+import com.google.common.base.Preconditions;
+import net.minecraft.item.ItemStack;
+import net.minecraft.item.crafting.Ingredient;
+import net.minecraft.util.NonNullList;
+
+import javax.annotation.Nonnegative;
+import javax.annotation.Nonnull;
+
+public class RecipeSacrificeCraft
+{
+    @Nonnull
+    private final NonNullList<Ingredient> input;
+    @Nonnull
+    private final ItemStack output;
+    @Nonnegative
+    private final double healthRequired;
+
+    public RecipeSacrificeCraft(@Nonnull NonNullList<Ingredient> input, @Nonnull ItemStack output, @Nonnegative double healthRequired)
+    {
+        Preconditions.checkNotNull(input, "input cannot be null.");
+        Preconditions.checkNotNull(output, "output cannot be null.");
+        Preconditions.checkArgument(healthRequired >= 0, "healthRequired cannot be negative.");
+
+        this.input = input;
+        this.output = output;
+        this.healthRequired = healthRequired;
+    }
+
+    @Nonnull
+    public final NonNullList<Ingredient> getInput()
+    {
+        return input;
+    }
+
+    @Nonnull
+    public final ItemStack getOutput()
+    {
+        return output;
+    }
+
+    @Nonnegative
+    public final double getHealthRequired()
+    {
+        return healthRequired;
+    }
+}