Remove camelCase properties

[chraibi]

This PR addresses issue #1415.

• Introduce new properties.
• Mark existing camelCase properties as deprecated with appropriate warnings
• Verify the functionality of the new snake_case properties.
• Test deprecated camelCase properties to ensure they still work and raise deprecation warnings.
• Ensure consistency between the old and new properties (changes to one are reflected in the other).
• Include a Ruff check to enforce snake_case naming patterns while explicitly ignoring violations for deprecated camelCase properties.
• Rename v0 in all models to desired_speed