Add Boat#getWoodType and Boat#setWoodType(TreeSpecies)

By: Matthew <stteg@hotmail.com>

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

@@ -1,10 +1,26 @@
 package org.bukkit.entity;
 
+import org.bukkit.TreeSpecies;
+
 /**
  * Represents a boat entity.
  */
 public interface Boat extends Vehicle {
 
+    /**
+     * Gets the wood type of the boat.
+     * 
+     * @return the wood type
+     */
+    TreeSpecies getWoodType();
+
+    /**
+     * Sets the wood type of the boat.
+     * 
+     * @param species the new wood type
+     */
+    void setWoodType(TreeSpecies species);
+
     /**
      * Gets the maximum speed of a boat. The speed is unrelated to the
      * velocity.