updated nextjs example with app router

examples/nextjs/src/app/ssr/page.tsx

@@ -0,0 +1,14 @@
+import { getApi } from "@/bknd";
+
+export default async function SSRPage() {
+   const api = await getApi({ verify: true });
+   const { data } = await api.data.readMany("posts");
+
+   return (
+      <div>
+         <h1>Server-Side Rendered Page</h1>
+         <pre>{JSON.stringify(data, null, 2)}</pre>
+         <pre>{JSON.stringify(api.getUser(), null, 2)}</pre>
+      </div>
+   );
+}