Create a new app instance for a team.
Configuration object.
Set exactly ONE of: customServiceId, service
Option: custom_service_id — The ID of a custom service to create the app instance for.
Option: service — The service identifier (for built-in services like "github", "okta", "aws").
The ID of the team.
The external service instance ID (e.g., GitHub org name, Okta domain, AWS account ID).
The name of the app instance.
The default access policy for the app instance (optional).
Whether access requests are enabled for the app instance.
Success