request: timezone support in `Cron`

[kyranet]

Is there an existing issue or pull request for this?

• I have searched the existing issues and pull requests

Feature description

Currently, Cron supports only UTC, however, it could be adapted to support various timezones, even local time.

Desired solution

Implement a way to define the timezone offset, this can be a function so we can calculate it in case a timezone's offset changes due to DST.

In the future, we can add support for Temporal.TimeZone.

Alternatives considered

N/a.

Additional context

No response

[legendhimself]

I am working on this

[favna]

Unassigned because @legendhimself hasn't delivered so it's open for grabs again

[noranobody]

I'd like to work on this