Check Canvas Media for Closed Captioning and Create a UFIXIT option

[rebelaide]

Replicate the functionality of finding YouTube videos in the course for Canvas Media.

Canvas has an API to check Canvas media (video and audio) for closed captioning: https://canvas.instructure.com/doc/api/media_objects.html#method.media_tracks.index

Create a UFIXIT to allow uploading a WebVTT or SRT file: https://canvas.instructure.com/doc/api/media_objects.html#method.media_tracks.update

[bagofarms]

Just a quick note: This requires testing on the hosted instance of Canvas, since our local instances don't have the Canvas Media feature.