api: add widget line height accessors

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

@@ -845,6 +845,20 @@ public interface Widget
 	 */
 	void setYPositionMode(int ypm);
 
+	/**
+	 * Get the line height for this widget.
+	 *
+	 * @return
+	 */
+	int getLineHeight();
+
+	/**
+	 * Set the line height for this widget. If set to 0, the line height is taken from the font instead.
+	 *
+	 * @param lineHeight
+	 */
+	void setLineHeight(int lineHeight);
+
 	/**
 	 * Gets the X axis text position mode
 	 *