Add initial module files and templates for Omnibus EU Free

- Created new image file for YouTube logo.
- Added index.php files for views and templates with license notice and redirection.
- Implemented back.js for page reload functionality with a button.
- Developed configure.tpl for admin configuration panel with documentation links.
- Created products-price-list.tpl for displaying product price data in a table format.
- Added presta_studio_omnibus_price.tpl for displaying price history information.
- Established hook templates for integration with PrestaShop.

modules/omnibuseufree/vendor/composer/autoload_psr4.php

@@ -0,0 +1,11 @@
+<?php
+
+// autoload_psr4.php @generated by Composer
+
+$vendorDir = dirname(__DIR__);
+$baseDir = dirname($vendorDir);
+
+return array(
+    'Omnibus\\Controller\\' => array($baseDir . '/src/controller'),
+    'Omnibus\\Compatibility\\' => array($baseDir . '/src/compatibility'),
+);