refactor: Remove Cupertino routing options and update the list of contributors (#1076)

- Remove code related to Cupertino routing that is no longer in use
- Update the list of contributors on GitHub
- Update the version of the xterm submodule

lib/view/page/setting/entries/app.dart

@@ -316,7 +316,6 @@ extension _App on _AppSettingsPageState {
         _buildBeta(),
         if (isMobile) _buildWakeLock(),
         _buildCollapseUI(),
-        _buildCupertinoRoute(),
         if (isDesktop) _buildHideTitleBar(),
         _buildEditRawSettings(),
       ],
@@ -344,13 +343,6 @@ extension _App on _AppSettingsPageState {
     );
   }
 
-  Widget _buildCupertinoRoute() {
-    return ListTile(
-      title: Text('Cupertino ${libL10n.route}'),
-      trailing: StoreSwitch(prop: _setting.cupertinoRoute),
-    );
-  }
-
   Widget _buildHideTitleBar() {
     return ListTile(
       title: Text(l10n.hideTitleBar),