Added create recipe page

lib/pages/dashboard_page.dart

@@ -1,15 +1,24 @@
 import 'package:flutter/material.dart';
+import 'package:rezepte/pages/create_recipe_page.dart';
 
 class Dashboard extends StatelessWidget {
   const Dashboard({super.key});
+
   static const routeName = '/';
 
+  void _onAddTapped(BuildContext context) =>
+      Navigator.of(context).pushNamed(CreateRecipe.routeName);
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
         title: const Text('Dashboard'),
       ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: () => _onAddTapped(context),
+        child: const Icon(Icons.add),
+      ),
     );
   }
 }