Custom Teams Cloud Store Provider
Hello! I am developing an app for Microsoft Teams which interacts with our cloud service and I would like to know how to integrate a custom cloud storage provider into Teams (Teams: Files -> Add cloud storage). Currently I have only the options "Citrix files", "Dropbox", "Box" and "OneDrive", but I would like to have a custom option to add our cloud service. I could not find any hints about extending this in the app manifest description (https://docs.microsoft.com/en-us/microsoftteams/platform/resources/schema/manifest-schema) nor any hints in the Microsoft Teams app developer reference. How can I do this? Thank you and Regards, Dominik