add hidden config option

runelite-client/src/main/java/net/runelite/client/config/ConfigItem.java

@@ -38,4 +38,6 @@ public @interface ConfigItem
 	String name();
 
 	String description();
+
+	boolean hidden() default false;
 }

runelite-client/src/main/java/net/runelite/client/plugins/config/ConfigPanel.java

@@ -149,6 +149,11 @@ public class ConfigPanel extends PluginPanel
 
 		for (ConfigItemDescriptor cid : cd.getItems())
 		{
+			if (cid.getItem().hidden())
+			{
+				continue;
+			}
+
 			JPanel item = new JPanel();
 			item.setLayout(new BorderLayout());
 			item.add(new JLabel(cid.getItem().name()), BorderLayout.CENTER);