[iOS] Missing iOS splash configuration

[chyiiiiiiiiiiii]

Now: If we open the app for the first time, you will see the bland and white screen during 200ms.

Goal: Add splash setting for iOS. If users open the apps, the screen will show a specific color bg, or specific effect first, and smooth to the first screen in the app.

Version: 0.0.24

[gnprice]

Thanks for the report. I think the existing behavior is OK if you're in light mode — the splash screen is plain white, and then the app's first screen is close to that.

As the screen capture shows, though, it's jarring when in dark mode. Instead, in dark mode we should have the splash screen be a dark background, ideally the exact same as the app's overall background in dark mode.