Export widget onLoadListener

Signed-off-by: Tomas Slusny <slusnucky@gmail.com>

runelite-api/src/main/java/net/runelite/api/widgets/Widget.java

@@ -525,8 +525,16 @@ public interface Widget
 	 */
 	void revalidateScroll();
 
+	/**
+	 * Array of widget key listeners
+	 */
 	Object[] getOnKeyListener();
 
+	/**
+     * Array of widget load listeners
+	 */
+	Object[] getOnLoadListener();
+
 	/**
 	 * Returns the archive id of the font used
 	 */