merge navigation and tab menu into bottom sheet

packages/flutter_mozilla_components/lib/src/domain/services/gecko_addon.dart

@@ -38,6 +38,10 @@ class GeckoAddonService extends GeckoAddonEvents {
     return _api.startAddonManagerActivity();
   }
 
+  Future<void> startAddonSettingsActivity(String extensionId) {
+    return _api.startAddonSettingsActivity(extensionId);
+  }
+
   Future<void> invokeAddonAction(
     String extensionId,
     WebExtensionActionType actionType,

packages/flutter_mozilla_components/lib/src/pigeons/gecko.g.dart

@@ -8550,6 +8550,31 @@ class GeckoAddonsApi {
     }
   }
 
+  Future<void> startAddonSettingsActivity(String extensionId) async {
+    final pigeonVar_channelName =
+        'dev.flutter.pigeon.flutter_mozilla_components.GeckoAddonsApi.startAddonSettingsActivity$pigeonVar_messageChannelSuffix';
+    final pigeonVar_channel = BasicMessageChannel<Object?>(
+      pigeonVar_channelName,
+      pigeonChannelCodec,
+      binaryMessenger: pigeonVar_binaryMessenger,
+    );
+    final Future<Object?> pigeonVar_sendFuture = pigeonVar_channel.send(
+      <Object?>[extensionId],
+    );
+    final pigeonVar_replyList = await pigeonVar_sendFuture as List<Object?>?;
+    if (pigeonVar_replyList == null) {
+      throw _createConnectionError(pigeonVar_channelName);
+    } else if (pigeonVar_replyList.length > 1) {
+      throw PlatformException(
+        code: pigeonVar_replyList[0]! as String,
+        message: pigeonVar_replyList[1] as String?,
+        details: pigeonVar_replyList[2],
+      );
+    } else {
+      return;
+    }
+  }
+
   Future<void> invokeAddonAction(
     String extensionId,
     WebExtensionActionType actionType,