chore: Halkyon Todo's scaffold joins the repository in apps/todo

Its server, client and app as `serverpod create` made them, with the
switch to server-side sessions that was waiting uncommitted, as files:
its one commit holds the scaffold alone.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>

apps/todo/halkyon_todo_flutter/lib/driver.dart

@@ -0,0 +1,15 @@
+// This file is never meant to be used on real apps, just for development.
+// ignore: depend_on_referenced_packages
+import 'package:flutter_driver/driver_extension.dart';
+
+import 'main.dart' as app;
+
+void main() {
+  enableFlutterDriverExtension(
+    // Text entry emulation is disabled by default to allow manual usage of the
+    // app, but will be required for agents to type through the app. Set this
+    // parameter to true to switch from manual to automated usage.
+    enableTextEntryEmulation: false,
+  );
+  app.main();
+}