feat: Add support for OR and AND conditions in filtering

[konradbeck-creditech]

Pull Request Template for FastCRUD

Description

This PR adds support for or_() and and_() in _parse_filters(), allowing for more flexible filtering when querying records.

Changes

• Added support for or_() to enable filtering with multiple conditions using logical OR.
• Introduced and_() to allow explicit AND grouping.
• Improved error handling for empty lists in or_() and and_().
• Refactored _parse_filters() for better readability and maintainability.

Tests

• Added unit tests for or_() to verify multiple condition filtering.
• Added unit tests for and_() to confirm AND logic works correctly.
• Included a test combining or_() and and_() to ensure compatibility.
• Maintained all existing tests without breaking changes.

Checklist

• [✅] I have read the CONTRIBUTING document.
• [✅ ] My code follows the code style of this project.
• [❌] I have added necessary documentation (if appropriate).
• [✅] I have added tests that cover my changes (if applicable).
• [✅] All new and existing tests passed.

Additional Notes

This enhancement improves query flexibility while keeping backward compatibility. 🚀

[igorbenav]

Hey, @konradbeck-creditech, can you please fix the checks?