Implement API for Skeleton and Zombie types. Fixes BUKKIT-2818

By: James Clarke <jamesrtclarke@me.com>

paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftSkeleton.java

@@ -2,6 +2,7 @@ package org.bukkit.craftbukkit.entity;
 
 import net.minecraft.server.EntitySkeleton;
 
+import org.apache.commons.lang.Validate;
 import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.entity.EntityType;
 import org.bukkit.entity.Skeleton;
@@ -25,4 +26,13 @@ public class CraftSkeleton extends CraftMonster implements Skeleton {
     public EntityType getType() {
         return EntityType.SKELETON;
     }
+
+    public SkeletonType getSkeletonType() {
+        return SkeletonType.getType(getHandle().getSkeletonType());
+    }
+
+    public void setSkeletonType(SkeletonType type) {
+        Validate.notNull(type);
+        getHandle().setSkeletonType(type.getId());
+    }
 }

paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftZombie.java

@@ -25,4 +25,20 @@ public class CraftZombie extends CraftMonster implements Zombie {
     public EntityType getType() {
         return EntityType.ZOMBIE;
     }
+
+    public boolean isBaby() {
+        return getHandle().isBaby();
+    }
+
+    public void setBaby(boolean flag) {
+        getHandle().setBaby(flag);
+    }
+
+    public boolean isVillager() {
+        return getHandle().isVillager();
+    }
+
+    public void setVillager(boolean flag) {
+        getHandle().setVillager(flag);
+    }
 }