Add initial module files and templates for Omnibus EU Free

- Created new image file for YouTube logo.
- Added index.php files for views and JavaScript with license notice and redirect to parent directory.
- Implemented back.js for reload functionality with button event listener.
- Introduced configure.tpl template for admin configuration with documentation links and CRON settings.
- Added products-price-list.tpl for displaying product price data in a table format.
- Created index.php files for hook templates with license notice and redirect.
- Added presta_studio_omnibus_price.tpl for displaying product discount information.

modules/omnibuseufree/vendor/composer/autoload_classmap.php

@@ -0,0 +1,12 @@
+<?php
+
+// autoload_classmap.php @generated by Composer
+
+$vendorDir = dirname(__DIR__);
+$baseDir = dirname($vendorDir);
+
+return array(
+    'Composer\\InstalledVersions' => $vendorDir . '/composer/InstalledVersions.php',
+    'Omnibus\\Compatibility\\PrestashopCompatibility' => $baseDir . '/src/compatibility/PrestashopCompatibility.php',
+    'Omnibus\\Controller\\MenuController' => $baseDir . '/src/controller/MenuController.php',
+);