feat: Add themes marketplace page and components

src/app/themes/page.tsx

@@ -0,0 +1,14 @@
+
+import Footer from "@/components/footer";
+import MarketplacePage from "@/components/marketplace";
+import { Navigation } from "@/components/navigation";
+
+export default function ThemesMarketplace() {
+  return (
+    <main className="flex min-h-screen flex-col items-center justify-start">
+      <MarketplacePage />
+      <Footer />  
+      <Navigation /> {/* At the bottom of the page */}
+    </main>   
+  );
+}