Extend the License API with an endpoint to retrieve activated license instances, ideally filterable by customer ID and/or license key.
The response should include the license key and related instance_ids, so merchants can deactivate activations even if the original app installation is no longer available.
Use case:
License deactivation currently requires both the license key and instance_id. This means apps need to store the instance_id themselves during activation.
If the app is uninstalled, the PC is reinstalled, or the merchant did not store the instance_id server-side, there is currently no API-based way to look up and deactivate the active instance.
It would be helpful if Creem could provide this through the License API.
Based on this customer request
