Only skip one SplashScreen at a time

[LeCalicot]

Current behavior

When clicking to skip the splash screen it skips all the the splash screens at once if multiple splash screens are chained

Expected behavior

When clicking, it only skips the current splash screen. If there is a second splash screen, a second click is needed.
That's how it's implement in most video games.

[SergioRibera]

This looks great for the proposal you made earlier #8 that allowed to put splash_screen in scene changes or in the middle of the game, I think this could be planned for another new release version, I really like the idea 😃