Added basic welcome page

src/routes/+layout.svelte

@@ -2,8 +2,14 @@
 	import { OpenAPI } from '@odit/lfk-client-js';
 	import { env } from '$env/dynamic/public';
 	import '../app.postcss';
+	import Footer from '../components/footer.svelte';
 
 	OpenAPI.BASE = env.PUBLIC_BASE_URL || 'https://run.lauf-fuer-kaya.de';
 </script>
 
-<slot />
+<div class="dark:bg-slate-900 flex flex-col h-screen">
+	<main class="flex-grow">
+		<slot />
+	</main>
+	<Footer />
+</div>