Feature Request: Calendar Conversion

[Heshmatkhah]

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Feature Request: Calendar Conversion

Hi,

Thank you for developing this outstanding library; it has greatly simplified date and time management for developers.

I would like to suggest adding support for calendar conversions, particularly between the Gregorian and Jalali (Solar Hijri) calendars.
There is many other calendar systems and the Jalali calendar is widely used in Iran and Afghanistan and is known for its precise alignment with the solar year.
If this aligns with your development goals, I am more than willing to assist in implementing this feature. by integrating calendar conversion into your grate time management library, we can further simplify the complex world of date and time handling, making it even more versatile and user-friendly.

Best regards