[frameworks][examples] Add support for zero-config SvelteKit (#6482)

While we already have support for [SvelteKit](https://sveltekit-delta.vercel.app) on Vercel with the [File System API](https://vercel.com/docs/more/adding-your-framework), this makes the Svelte logo show up and adds an example. I also updated the Svelte example to match their default template and guide the user to use SvelteKit if they want functions.

https://sveltekit.examples.vercel.com

examples/svelte/src/App.svelte

@@ -1,48 +1,30 @@
 <script>
-  import { onMount } from "svelte";
-  export let date;
-
-  onMount(async () => {
-    const res = await fetch("/api/date");
-    const newDate = await res.text();
-    date = newDate;
-  });
+	export let name;
 </script>
 
 <main>
-  <h1>Svelte + Node.js API</h1>
-  <h2>
-    Deployed with
-    <a href="https://vercel.com/docs" target="_blank" rel="noreferrer noopener">
-      Vercel
-    </a>
-    !
-  </h2>
-  <p>
-    <a
-      href="https://github.com/vercel/vercel/tree/main/examples/svelte"
-      target="_blank"
-      rel="noreferrer noopener">
-      This project
-    </a>
-    is a
-    <a href="https://svelte.dev/">Svelte</a>
-    app with three directories,
-    <code>/public</code>
-    for static assets,
-    <code>/src</code>
-    for components and content, and
-    <code>/api</code>
-    which contains a serverless
-    <a href="https://nodejs.org/en/">Node.js</a>
-    function. See
-    <a href="/api/date">
-      <code>api/date</code>
-      for the Date API with Node.js
-    </a>
-    .
-  </p>
-  <br />
-  <h2>The date according to Node.js is:</h2>
-  <p>{date ? date : 'Loading date...'}</p>
+	<h1>Hello {name}!</h1>
+	<p>Visit the <a href="https://svelte.dev/tutorial">Svelte tutorial</a> to learn how to build Svelte apps.</p>
 </main>
+
+<style>
+	main {
+		text-align: center;
+		padding: 1em;
+		max-width: 240px;
+		margin: 0 auto;
+	}
+
+	h1 {
+		color: #ff3e00;
+		text-transform: uppercase;
+		font-size: 4em;
+		font-weight: 100;
+	}
+
+	@media (min-width: 640px) {
+		main {
+			max-width: none;
+		}
+	}
+</style>