Add Webhook events for license regeneration and suspention

As it currently stands, to have up-to-date license-key information one has to manually check the suspension status (as it’s not even exposed in the api) and automatically (periodically) request ALL licenses via API, just to check if a License key changed.

This is TERRIBLY INEFFICIENT!

It would be nice, if there was an webhook event for license regeneration, which gave us:

• the License id

• the NEW License key and short-key

• Optionally the OLD License key and short-key

And for the webhook event for the license (un-)suspension the following info would be nice:

• The License id

• Suspension status (boolean true or false)

• Optionally Timestamp: Suspended At

• Optionally Timestamp: Unsuspended At

• Optionally License key and short-key