feat(mistral-OCR): added mistral tool and block for parsing pdfs - #217

Description

Created a Mistral block with a parse tool to parse PDFs.

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Security enhancement
• Performance improvement
• Code refactoring (no functional changes)

How Has This Been Tested?

Ran a pdf through with my own API key and it worked (must have PDF link).

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added tests that prove my fix is effective or that my feature works
• All tests pass locally and in CI (npm test)
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules
• I have updated version numbers as needed (if needed)

Security Considerations:

• My changes do not introduce any new security vulnerabilities
• I have considered the security implications of my changes

Additional Information:

Still need to add the ability to manually upload files to test OCR with local file upload (or hosted file upload).