Add Ceneo Trusted Reviews module with initial implementation

- Created Html helper class for displaying information and translations.
- Added index.php files for various directories to prevent direct access.
- Implemented Polish translations for the module.
- Set up upgrade scripts for future module updates.
- Included Composer autoloading files and configurations.
- Added template files for displaying header and order confirmation scripts.
- Established .htaccess rules for security in vendor directory.

modules/ceneo_trustedreviews/vendor/composer/autoload_psr4.php

@@ -0,0 +1,10 @@
+<?php
+
+// autoload_psr4.php @generated by Composer
+
+$vendorDir = dirname(dirname(__FILE__));
+$baseDir = dirname($vendorDir);
+
+return array(
+    'CeneoTrustedReviews\\' => array($baseDir . '/src'),
+);