Parse structured data from an Image

[devtanna]

Hello 👋

Now that many models support image input as part of the prompt, what do you think of kor having support for parsing data from images? I would love to try and put up a draft PR :)

The typical use case would be, user inputs a pdf invoice, it's converted to an image, image is input to kor for data extraction.
Currently, the pdf is converted to text and then input to kor for data extraction.
The image flow is really advantageous when the document has handwritten parts.