feat: Added base Integration class

Author: seebeen

src/Core/Integration.php

@@ -0,0 +1,23 @@
+<?php //phpcs:disable Squiz.Commenting.FunctionComment.Missing
+
+use XWC\Mixins\Settings_API_Methods;
+
+/**
+ * Base class for extended WooCommerce integrations.
+ */
+abstract class XWC_Integration extends WC_Integration {
+    use Settings_API_Methods;
+
+    protected function get_meta_type(): string {
+        return 'integration';
+    }
+
+    protected function get_base_defaults(): array {
+        return array(
+            'id'                 => '',
+            'method_description' => '',
+            'method_title'       => '',
+            'plugin_id'          => '',
+        );
+    }
+}