Breaking API change about scriptshifter

[scossu]

Breaking commit: e2bbd42

[thisismattmiller]

Sure, I'll fix it in Marva when I update Scriptshifter after you make the change, so no need to wait for me on that point. I will make a pull request for the interface to change. Thanks.

[scossu]

@thisismattmiller I believe this is getting close to be ready for merging. Whenever you can update the UI display function I will open a PR, and then you can manage the deployment and Marva integration on your own terms.

[scossu]

Summarizing the breaking changes:

1. The transliteration/transcription endpoint is now /trans for both UI and API calls;
2. All parameters for /trans are passed in the POST body;
3. The response is no longer plain text, but a JSON object with two keys: output and warnings.

The PR is ready for merging. Closing this issue as it was just for documentation purposes.