Feat: view times in user timezone

[mshannaq]

As users and system users may be located in various time zones, it is essential to implement a feature that allows users to set their preferred time zone. and show times for each user in his time-zone.

This customization will enhance the overall user experience and ensure accurate time-related information across the system.

[mshannaq]

The current system use UTC as default time zone.

we should create setting variable for each user and then show times in that time zone if has been set. (after we convert the time from UTC [or app.appTimezone] to setting user defined time-zone

and keep the database time set to UTC.

see mshannaq://extendytest/date_utc_user.md for the idea.