Added EnderCrystal entity

By: Nathan Adams <dinnerbone@dinnerbone.com>

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

@@ -0,0 +1,7 @@
+package org.bukkit.entity;
+
+/**
+ * A crystal that heals nearby EnderDragons
+ */
+public interface EnderCrystal extends Entity {
+}