Version 1.4.0 - Add Gitea CI/CD release pipeline

- Automated release workflow triggered on version tags (v*)
- Validates plugin version matches tag
- Installs production Composer dependencies
- Compiles translation files
- Creates release package with proper exclusions
- Generates SHA256 checksum
- Publishes release to Gitea with changelog notes

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

wc-tier-and-package-prices.php

@@ -4,7 +4,7 @@
  * Plugin Name: WooCommerce Tier and Package Prices
  * Plugin URI: https://src.bundespruefstelle.ch/magdev/wc-tier-package-prices
  * Description: Add tier pricing and package prices to WooCommerce products with configurable quantities at fixed prices
- * Version: 1.3.1
+ * Version: 1.4.0
  * Author: Marco Graetsch
  * Author URI: https://src.bundespruefstelle.ch/magdev
  * Text Domain: wc-tier-package-prices
@@ -46,7 +46,7 @@ if (!function_exists('wc_tpp_php_version_notice')) {
 
 // Define plugin constants
 if (!defined('WC_TPP_VERSION')) {
-    define('WC_TPP_VERSION', '1.3.1');
+    define('WC_TPP_VERSION', '1.4.0');
 }
 if (!defined('WC_TPP_PLUGIN_DIR')) {
     define('WC_TPP_PLUGIN_DIR', plugin_dir_path(__FILE__));