Add support for Mistral OCR

[ivoencarnacao]

Expected Behavior
Integrating mistral-ocr-latest into Spring AI would provide users with document processing capabilities, aligning with Spring AI's objective of enhancing AI model integration.

Current Behavior
There is no current support for mistral-ocr-latest, although there is an open PR #2404

Context
Press release

[apappascs]

This Pr resolves this issue #2404