Respect dark style preference

[leolost2605]

Currently we always force dark mode. This will allow the user to toggle it off in a new app menu.

[danirabbit]

Do we need to add a setting for this? Should we just follow the system style like other apps?

[leolost2605]

I personally don't need a setting. But I can imagine some would prefer to have Videos always dark which is why it's currently the default 🤷

[danirabbit]

@leolost2605 I think we should try just following the system setting first and see if we get feedback about it! New cycle is the perfect time to try new things :)

[leolost2605]

@danirabbit done :)