feat(seo): implement google analytics, sitemap, robots and json-ld structured data

app/robots.ts

@@ -0,0 +1,16 @@
+import type { MetadataRoute } from "next";
+
+const SITE_URL = process.env.NEXT_PUBLIC_SITE_URL || "https://poyrazavsever.com";
+
+export default function robots(): MetadataRoute.Robots {
+  return {
+    rules: [
+      {
+        userAgent: "*",
+        allow: "/",
+        disallow: ["/api/", "/_next/"],
+      },
+    ],
+    sitemap: `${SITE_URL}/sitemap.xml`,
+  };
+}