Add world clocks to widget

[hughwilliams94]

Checklist

• I made sure that there are no existing issues - open or closed - to which I could contribute my information.
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• I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
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• This issue contains only one feature request.
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Feature description

It would be great to be able to see world clock times in the digital clock widget below the main time and date. This would be similar to how the AOSP Clock App digital clock widget functions

Why do you want this feature?

I often travel to different time zones and keeping track of local times easily is important

Additional information

No response