Add notifications on missing functionality

flutter/lib/pages/settings/settings_view.dart

@@ -220,7 +220,9 @@ class _SettingsRootPageState extends State<SettingsRootPage> {
         leading: Icon(FontAwesomeIcons.solidWaveform),
         title: Text('Notification Sound'),
         value: Text(ncf.sound ?? '(Default)'),
-        onPressed: (context) => {/*TODO*/},
+        onPressed: (context) => {
+          Toaster.info("Not Implemented", "... will be implemented in a later version") // TODO
+        },
       ),
       SettingsTile.switchTile(
         initialValue: ncf.playSound,
@@ -238,7 +240,9 @@ class _SettingsRootPageState extends State<SettingsRootPage> {
         leading: Icon(FontAwesomeIcons.solidStopwatch20),
         title: Text('Auto Timeout'),
         value: Text((ncf.timeoutAfter != null) ? "${ncf.timeoutAfter} sec" : "(None)"),
-        onPressed: (context) => {/*TODO*/},
+        onPressed: (context) => {
+          Toaster.info("Not Implemented", "... will be implemented in a later version") // TODO
+        },
       ),
     ];
   }