Add LivingEntity#clearActiveItem

paper-api/src/main/java/org/bukkit/entity/LivingEntity.java

@@ -1071,6 +1071,11 @@ public interface LivingEntity extends Attributable, Damageable, ProjectileSource
      */
     org.bukkit.inventory.@NotNull ItemStack getActiveItem();
 
+    /**
+     * Interrupts any ongoing active "usage" or consumption or an item.
+     */
+    void clearActiveItem();
+
     /**
      * Gets the remaining number of ticks for {@link #getActiveItem()}'s usage.
      *