Add playground

pages/index.tsx

@@ -1,5 +1,10 @@
+import Link from "next/link";
 import React from "react";
 
 export default function Home() {
-  return <p>Hello, world!</p>;
+  return (
+    <p>
+      Click <Link href="/playground">here</Link> to visit the playground
+    </p>
+  );
 }

pages/playground.tsx

@@ -0,0 +1,10 @@
+import React from "react";
+
+export default function Home() {
+  return (
+    <>
+      <h1>Playground</h1>
+      <p>Show off your components here!</p>
+    </>
+  );
+}