Add toggle for validation

[jonhilgart22]

Description

Add toggle for validation

Changes Made

• Added feature X
• Fixed bug Y
• Updated documentation Z
• Other: ...

Type of Change

• 🐛 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
• 🎨 Code style/formatting
• ♻️ Refactoring
• ⚡ Performance improvement
• 🧪 Test improvement

Testing

• Tests pass locally (uv run pytest)
• Added tests for new functionality
• Tested on multiple Python versions (if applicable)
• Tested with different LLM providers (if applicable)

Code Quality

• Code follows project style guidelines (uv run black . && uv run isort .)
• Type checking passes (uv run mypy langstruct/)
• Added appropriate docstrings
• Updated examples if needed

Documentation

• Updated README if needed
• Updated API documentation
• Added/updated examples
• Updated CHANGELOG.md

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 made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

Related Issues

Closes #(issue number)

Screenshots (if applicable)

Add screenshots to help explain your changes.

Additional Notes

Any additional information, concerns, or questions for reviewers.