[Feature request] Whisper Language Detection

Name of the feature
Language Detection with the Whisper Model in Transformers.js

Reason for request
The original Whisper model includes a dedicated function for language detection. It would be awesome to have a similar capability within Transformers.js. In my current application, Whisper's models are running efficiently on the browser. However, for language detection, I find myself repeatedly making requests to my backend service.

Additional context
Is it possible to implement language detection as an event returned from the pipeline?