Service Principals to replace Secure Clients for Citrix Cloud Automation

We're adding the Service Principal feature to replace Secure Client usage for Citrix Cloud automation. This new feature enhances security on Citrix Cloud by de-coupling rights and visibility from the creating admin, supporting secret key expiration, and enabling the use of multiple secret keys to facilitate key rotation workflows. This feature also provides the ability to migrate existing secure clients to service principals without disrupting existing automation.