SPIGOT-1936: LootTable API

By: Senmori <thesenmori@gmail.com>

paper-api/src/main/java/org/bukkit/block/Hopper.java

@@ -1,8 +1,9 @@
 package org.bukkit.block;
 
 import org.bukkit.Nameable;
+import org.bukkit.loot.Lootable;
 
 /**
  * Represents a captured state of a hopper.
  */
-public interface Hopper extends Container, Nameable { }
+public interface Hopper extends Container, Nameable, Lootable { }