Ai plugin ocr support

I think we should still keep this open, the captioning feature is adjacent to OCR but not exactly OCR.

OCR for example would allow you to take a photo of your notes and then upload and print them exactly. The AI captioning is much more sophisticated but also does not give you that fidelity of printing an entire page of text.

Not sure when we will have time to work on an OCR, but it does feel a bit different.