SPIGOT-3403: Add an EntityPickupItemEvent

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

paper-api/src/main/java/org/bukkit/event/player/PlayerPickupItemEvent.java

@@ -4,10 +4,13 @@ import org.bukkit.entity.Item;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
 import org.bukkit.event.HandlerList;
+import org.bukkit.event.entity.EntityPickupItemEvent;
 
 /**
  * Thrown when a player picks an item up from the ground
+ * @deprecated {@link EntityPickupItemEvent}
  */
+@Deprecated
 public class PlayerPickupItemEvent extends PlayerEvent implements Cancellable {
     private static final HandlerList handlers = new HandlerList();
     private final Item item;