Untangling: Move Marketing Tools page to wp-admin (#45216)

Reimplements the Marketing Tools page from Calypso as a wp-admin screen.

Author: mmtr

projects/packages/jetpack-mu-wpcom/changelog/dotcom-10634-reimplement-hostingtools-marketing-tools-tab-as-tools

@@ -0,0 +1,4 @@
+Significance: minor
+Type: added
+
+Untangling: Add Marketing Tools page to wp-admin

projects/packages/jetpack-mu-wpcom/src/class-jetpack-mu-wpcom.php

@@ -321,6 +321,7 @@ public static function load_wpcom_user_features() {
 		if ( ! class_exists( 'A8C\FSE\Help_Center' ) ) {
 			require_once __DIR__ . '/features/help-center/class-help-center.php';
 		}
+		require_once __DIR__ . '/features/marketing/marketing.php';
 		require_once __DIR__ . '/features/pages/pages.php';
 		require_once __DIR__ . '/features/replace-site-visibility/replace-site-visibility.php';
 		require_once __DIR__ . '/features/stats/stats.php';