Logs in a user with a basic auth header. Note that playPORTAL does not support basic auth for normal routes (i.e. an Authorization Basic header). Users can login via a basic auth header using this route, which will grant authorization and refresh tokens as if the user logged in via the standard OAuth flow.
For security reasons, an app must have basic auth login enabled by a playPORTAL administrator before this route can be used.
Client ID for your app from playPORTAL Studio.
Expects "Basic <basic auth token>". A basic auth token is the user's handle and password separated by a colon (":") and base 64 encoded.
You will receive an "access_token" and "refresh_token" headers in the response, which can then be used to authenticate as normal.