Implement the Depth Strider enchantment in the API

By: Suddenly <suddenly@suddenly.coffee>

paper-api/src/main/java/org/bukkit/enchantments/Enchantment.java

@@ -50,6 +50,11 @@ public abstract class Enchantment {
      */
     public static final Enchantment THORNS = new EnchantmentWrapper(7);
 
+    /**
+     * Increases walking speed while in water
+     */
+    public static final Enchantment DEPTH_STRIDER = new EnchantmentWrapper(8);
+
     /**
      * Increases damage against all targets
      */