Enhanced webhook events with channel information

Added

  • New webhook event.
    • contact_center.engagement_upgrade_expired
    • contact_center.engagement_upgrade_initiated
    • contact_center.engagement_upgrade_completed

Enhancements

  • New channel_source field in these webhook events.
    • contact_center.engagement_started
    • contact_center.engagement_consumer_notified
    • contact_center.engagement_consumer_answered
    • contact_center.engagement_user_ended
    • contact_center.engagement_user_answered
  • New channel field in this webhook event.
    • contact_center.engagement_started