Add all selected world clocks to digital clock widget

[Universal-Igloo]

Describe the solution you'd like
The digital clock widget on AOSP has this feature, and Chrono being a replacement for that app should have the same.

Most people will have only the widget on the main screen to fulfill multiple needs - see the time, see the world clock for work, tap to open the Chrono app, see the upcoming alarm etc

Describe alternatives you've considered
An alternative could be creating a separate world clock widget.

Additional context
Screenshot of AOSP Clock Widget