This frontend JS module creates cookies used especially for tracking: - `__futm_op` - bot flag - `__futm_source` - user's original `utm_source` param from the 1st visit recently - `__futm_session` - indicating user's active session - `__futm_data` - all the tracking data like `utm_source`, `utm_medium`, `utm_landing_page_id` etc. from query params and other sources of truth