✨ Add storage configuration, localization updates, and feed generation

- Added `publicDisk` configuration to `filesystems.php`.
- Expanded locale translations in `es.json` and `de.json`.
- Implemented RSS, Atom, and JSON feed views.
- Added `feed.php` configuration for feed generation.
- Introduced `ImageController` for image handling.
- Updated application routing to include `api.php`.

app/Http/Controllers/Api/EmailCampaignController.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Http\Controllers\Controller;
+use App\Models\EmailCampaign;
+
+class EmailCampaignController extends Controller
+{
+    public function __invoke()
+    {
+        return EmailCampaign::query()->get();
+    }
+
+}