Initial commit: ATT Consent plugin v1.0.0

Google Consent Mode v2 cookie consent plugin with session attribution
preservation, custom script management, and gtag.js/GTM support.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

uninstall.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Uninstall handler.
+ *
+ * @package ATT_Consent
+ */
+
+if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
+	exit;
+}
+
+delete_option( 'att_consent_settings' );
+delete_option( 'att_cc_db_version' );
+
+global $wpdb;
+$table_name = $wpdb->prefix . 'att_cc_scripts';
+$wpdb->query( "DROP TABLE IF EXISTS {$table_name}" ); // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared