switch tabs by swipe gesture

app/lib/features/geckoview/features/browser/presentation/widgets/browser_modules/app_bar_title.dart

@@ -8,13 +8,15 @@ import 'package:text_scroll/text_scroll.dart';
 class AppBarTitle extends StatelessWidget {
   final TabState tab;
 
-  final void Function()? onTap;
+  final VoidCallback? onTap;
-  final void Function()? onLongPress;
+  final VoidCallback? onLongPress;
+  final GestureDragEndCallback? onHorizontalDragEnd;
 
   const AppBarTitle({
     required this.tab,
     this.onTap,
     this.onLongPress,
+    this.onHorizontalDragEnd,
     super.key,
   });
 
@@ -44,6 +46,7 @@ class AppBarTitle extends StatelessWidget {
     return GestureDetector(
       onTap: onTap,
       onLongPress: onLongPress,
+      onHorizontalDragEnd: onHorizontalDragEnd,
       child: Row(
         children: [
           TabIcon(state: tab),

app/lib/features/geckoview/features/browser/presentation/widgets/browser_modules/bottom_app_bar.dart

@@ -75,6 +75,13 @@ class BrowserBottomAppBar extends HookConsumerWidget {
                                   .loadUrl(url: newUrl);
                             }
                           },
+                          onHorizontalDragEnd: (details) async {
+                            if (details.localPosition.dx > 150) {
+                              await ref
+                                  .read(tabRepositoryProvider.notifier)
+                                  .selectPreviousTab();
+                            }
+                          },
                         )
                         : const SizedBox.shrink();
                   },
@@ -118,11 +125,6 @@ class BrowserBottomAppBar extends HookConsumerWidget {
                       .show(ViewTabsSheet());
                 }
               },
-              onDoubleTap: () async {
-                await ref
-                    .read(tabRepositoryProvider.notifier)
-                    .selectPreviousTab();
-              },
               onLongPress: () {
                 if (tabMenuController.isOpen) {
                   tabMenuController.close();