MVP: Add option for the Android Twitch app to use the light or dark theme by inheriting the state of the system's theme [Android 10+].

Bonus: Ideally, it would be great for the app's rendered state to automatically update the theme without having to be restarted. Switching back to the app via the app switcher (whilst it's running in RAM) after the system theme changes (either manually or automatically, based on Sunrise/Sunset) should cause this to occur, as well as if it's in the foreground and Sunrise/Sunset toggles a system-wide change.