Notifications: Native Pushover acknowledge integration

The native Pushover Integration is heavily used for notifications. For "emergency" level notifications Pushover is asking the user for acknowledgement within the App (including retry and expire). It would be great to have a possibility to retrieve this acknowledgement also in Checkmk. There is a receipt created for each emergency level notification and the Pushover API allows to check for the corresponding acknowledge status or even use the Callback URL that can be triggered after successful acknowledgement https://pushover.net/api/receipts. Reflecting back the acknowledgement status to Checkmk could push affected hosts/service in checkmk as well to acknowledged.