Schedule ODK Collect dark theme from sunset to sunrise

1. What is the general goal of the feature?
In the "theme" menu, provide an additional option to toggle between light and dark theme from sunset to sunrise.

2. What are some example use cases for this feature?
We use the same devices for night and daytime surveys. To toggle between daytime and nighttime surveys, we have to adjust both system dark mode and the ODK Collect dark theme.

Android provides the option to toggle between light and dark mode based on sunset/sunrise times. This saves our already exhausted field teams multiple taps twice daily times number of devices deployed.

3. What can you contribute to making this feature a reality?

"use device theme" does exactly what I need. The device theme is scheduled to follow sunrise/sunset and ODK follows the device theme.
Great feature!