feat: Add YouTube video support and update admin templates

- Introduced a new YouTube tech integration in `youtube.min.js` for enhanced video playback.
- Created new admin template files for managing video settings, including `index.php` and `steasyvideo-pro.tpl`.
- Updated hook templates (`device_mode.tpl`, `forquickview.tpl`, `header.tpl`, `miniature.tpl`, `miniature_tb.tpl`, and predefined templates) to include video functionality.
- Implemented caching headers in several PHP files to improve performance.
- Ensured all new templates include proper licensing information and copyright notices.

modules/steasyvideo/controllers/front/ajax.php

@@ -0,0 +1,22 @@
+<?php
+/**
+* @author    PrestaShop SA and Contributors <contact@prestashop.com>
+* @copyright Since 2007 PrestaShop SA and Contributors
+* @license   https://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
+*/
+if (!defined('_PS_VERSION_')) {
+    exit;
+}
+
+class StEasyVideoAjaxModuleFrontController extends ModuleFrontController
+{
+    public function initContent()
+    {
+        $id_product = (int)Tools::getValue('id_product');
+        $product = new Product($id_product, false, Configuration::get('PS_LANG_DEFAULT'), $this->context->shop->id);
+        $video_data = $this->module->getVideosByProduct($product);
+        ob_end_clean();
+        header('Content-Type: application/json');
+        die(json_encode($video_data));
+    }
+}