Improve SEO metadata and structured data

components/json-ld.tsx

@@ -0,0 +1,7 @@
+type JsonLdProps = {
+  data: Record<string, unknown> | Array<Record<string, unknown>>;
+};
+
+export function JsonLd({ data }: JsonLdProps) {
+  return <script type="application/ld+json" dangerouslySetInnerHTML={{ __html: JSON.stringify(data) }} />;
+}