add isolated tab feature

app/test/drift/tabs/generated/schema.dart

@@ -1,12 +1,14 @@
 // dart format width=80
-// GENERATED CODE, DO NOT EDIT BY HAND.
-// ignore_for_file: type=lint
+// GENERATED BY drift_dev, DO NOT MODIFY.
+// ignore_for_file: type=lint,unused_import
+//
 import 'package:drift/drift.dart';
 import 'package:drift/internal/migrations.dart';
 import 'schema_v2.dart' as v2;
 import 'schema_v3.dart' as v3;
 import 'schema_v4.dart' as v4;
 import 'schema_v5.dart' as v5;
+import 'schema_v6.dart' as v6;
 
 class GeneratedHelper implements SchemaInstantiationHelper {
   @override
@@ -20,10 +22,12 @@ class GeneratedHelper implements SchemaInstantiationHelper {
         return v4.DatabaseAtV4(db);
       case 5:
         return v5.DatabaseAtV5(db);
+      case 6:
+        return v6.DatabaseAtV6(db);
       default:
         throw MissingSchemaException(version, versions);
     }
   }
 
-  static const versions = const [2, 3, 4, 5];
+  static const versions = const [2, 3, 4, 5, 6];
 }