fix: missing import in tracker integration

Signed-off-by: Bart Jaskulski <bjaskulski@protonmail.com>

src/Extension/CommonBinding/WPDeskTrackerBridge.php

@@ -7,6 +7,7 @@ use Psr\Log\LoggerInterface;
 use WPDesk\Init\Binding\Hookable;
 use WPDesk\Init\Configuration\Configuration;
 use WPDesk\Init\Plugin\Plugin;
+use WPDesk\Tracker\OptInOptOut;
 
 class WPDeskTrackerBridge implements Hookable {