SPIGOT-3629: Greatly expand entity effect API

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

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

@@ -311,6 +311,8 @@ public interface Entity extends Metadatable, CommandSender, Nameable {
      * Performs the specified {@link EntityEffect} for this entity.
      * <p>
      * This will be viewable to all players near the entity.
+     * <p>
+     * If the effect is not applicable to this class of entity, it will not play.
      *
      * @param type Effect to play.
      */

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

@@ -1,6 +1,6 @@
 package org.bukkit.entity;
 
-public interface Tameable {
+public interface Tameable extends Entity {
 
     /**
      * Check if this is tamed