[feature]: Alternative Calendars

Is there an existing issue for this?

• I have searched the existing issues

Summary

Ability to change the Calendar of the Workspace or Project.

It can include the most important alternative.
Here are the options on the Google Calendar:

<img width="368" alt="Screenshot 1403-01-20 at 6 32 26 in the morning" src="

Why should this be worked on?

1. [18 Countries]( use another calendar alongside the Gregorian calendar
For Example, India and Bangladesh use Bengali calendar and Śaka calendar alongside the Gregorian calendar.


2. Some Countries are not using the Gregorian Calendar:
For Example, Iran and Afghanistan, Both countries primarily use the Solar Hijri calendar, also known as the Persian calendar.