private void App_OnStartup(object sender, StartupEventArgs e)
{
var splash = new SplashScreenWindow();
splash.Show();
ServiceProvider = IOCReplacer.Create(sc => { sc.AddSingleton(this); });
var window = ServiceProvider.GetRequiredService <Views.MainWindow>();
window?.Show();
splash.Init(ServiceProvider.GetRequiredService <IAppService>());
splash.Hide();
}