OCR endpoint for extracting text from documents and images.

Supports two input modes:

1. JSON body (Mistral OCR API compatible):

curl -X POST "http://localhost:4000/v1/ocr"         -H "Authorization: Bearer sk-1234"         -H "Content-Type: application/json"         -d '{
        "model": "mistral-ocr",
        "document": {
            "type": "document_url",
            "document_url": "https://arxiv.org/pdf/2201.04234"
        }
    }'

2. Multipart form file upload:

curl -X POST "http://localhost:4000/v1/ocr"         -H "Authorization: Bearer sk-1234"         -F "model=mistral-ocr"         -F "file=@document.pdf"