Add initial files and templates for Omnibus EU Free module

- Added yt_logo.png image for branding.
- Created index.php for views and templates with license notice and redirection.
- Implemented back.js for reload functionality with event listener.
- Developed configure.tpl for admin configuration panel with documentation links.
- Established products-price-list.tpl for displaying product pricing information.
- Created presta_studio_omnibus_price.tpl for displaying price history and discounts.
- Added index.php files in various directories for consistent redirection and license notice.

modules/omnibuseufree/composer.json

@@ -0,0 +1,14 @@
+{
+    "name": "prestastudio/omnibus",
+    "description": "Module for Omnibus Directive by the European Union law.",
+    "autoload": {
+      "psr-4": {
+        "Omnibus\\Controller\\": "src/controller/",
+        "Omnibus\\Compatibility\\": "src/compatibility/"
+      }
+    },
+    "config": {
+        "prepend-autoloader": false
+    },
+    "type": "prestashop-module"
+  }