[FEATURE] ZartanTV - new veritcal - Use Device Authorization Grant

[RyAndrew]

Is your feature request related to a problem? Please describe. The streaming demo "streamingservice" was created before the Device Authorization Grant existed. Now we can leverage the native Okta Device Authorization Grant flow to achieve the same result. https://developer.okta.com/docs/guides/device-authorization-grant/main/

Create a new vertical for this called "ZartanTV" In the future we may sunset the old "streamingservice" vertical.