feat(seo): implement SEO audit remediations

- Add dynamic sitemap.ts, robots.ts, and llms.txt route
- Add metadataBase and JSON-LD Organization schema to layout
- Set canonical alternates for all routes
- Migrate raw img tags to next/image for LCP optimization
- Add SEO dictionary strings to tr.json and en.json

app/[lang]/iletisim/page.tsx

@@ -32,6 +32,18 @@ const LOCATIONS = [
   },
 ];
 
+export async function generateMetadata({ params }: { params: Promise<{ lang: string }> }) {
+  const { lang } = await params;
+  const dict = await getDictionary(lang as Locale);
+  return {
+    title: dict.seo.contact.title,
+    description: dict.seo.contact.description,
+    alternates: {
+      canonical: `/${lang}/iletisim`,
+    },
+  };
+}
+
 export default async function IletisimPage({
   params,
 }: {