studiou-wc-mandatory-products: fix check if constants already defined, add localizations

studiou-wc-mandatory-products/studiou-wc-mandatory-products.php

@@ -3,7 +3,7 @@
  * Plugin Name: QDR - Studiou WC Mandatory Products
  * Plugin URI: https://www.quadarax.com/plugins/studiou-wc-mandatory-products
  * Description: Extends WooCommerce to add mandatory products to cart based on product categories.
- * Version: 1.0.0
+ * Version: 1.1.1
  * Requires at least: 6.7.2
  * Requires PHP: 8.2
  * Author: Dalibor Votruba
@@ -64,9 +64,9 @@ if (!class_exists('StudioU_WC_Mandatory_Products')) {
          * Define plugin constants
          */
         private function define_constants() {
-            define('STUDIOU_WCMP_VERSION', '1.0.0');
-            define('STUDIOU_WCMP_PLUGIN_DIR', plugin_dir_path(__FILE__));
-            define('STUDIOU_WCMP_PLUGIN_URL', plugin_dir_url(__FILE__));
+            if (!defined('STUDIOU_WCMP_VERSION')) define('STUDIOU_WCMP_VERSION', '1.1.1');
+            if (!defined('STUDIOU_WCMP_PLUGIN_DIR')) define('STUDIOU_WCMP_PLUGIN_DIR', plugin_dir_path(__FILE__));
+            if (!defined('STUDIOU_WCMP_PLUGIN_URL')) define('STUDIOU_WCMP_PLUGIN_URL', plugin_dir_url(__FILE__));
         }
 
         /**