Support for non-English languages #8

This is dependent on Live Caption and ML Kit supporting non-English languages. Once that is available it shouldn't be hard to add.

Consider looking into StringSearch which may be helpful for matching text in different languages.

We could also translate captions and/or transcripts into different languages. (E.g. listen in English and read along in a Spanish transcript) This could be done now for English audio and text in languages supported by ML Kit.