Implement creator studio and upload updates

app/Http/Controllers/RobotsTxtController.php

@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Response;
+
+final class RobotsTxtController extends Controller
+{
+    public function __invoke(): Response
+    {
+        $content = implode("\n", [
+            'User-agent: *',
+            'Allow: /',
+            'Sitemap: ' . url('/sitemap.xml'),
+            '',
+        ]);
+
+        return response($content, 200, [
+            'Content-Type' => 'text/plain; charset=UTF-8',
+            'Cache-Control' => 'public, max-age=' . max(60, (int) config('sitemaps.cache_ttl_seconds', 900)),
+        ]);
+    }
+}