Bind viewModel to composable lifecycle

[AntonMishanin]

Create a viewModelStore for each screen
When you click on back button, viewModelStore of this screen cleans their viewModels
It's works for version 0.6.4

But now it doesn't work - your click on back button - viewModel cleared and right away viewModel is creating again.
If you delete content: RendererContent value when you create ComposeRenderImpl in AppActivity and will use defaultRendererContent - it works good
I think we have a problem with content: RendererContent implementation

ScreenTransition( transitionSpec = { if (transitionType == ScreenTransitionType.Replace) { scaleIn(initialScale = 2f) + fadeIn() with fadeOut() } else { val (initialOffset, targetOffset) = when (transitionType) { ScreenTransitionType.Pop -> ({ size: Int -> -size }) to ({ size: Int -> size }) else -> ({ size: Int -> size }) to ({ size: Int -> -size }) } slideInHorizontally(initialOffsetX = initialOffset) with slideOutHorizontally(targetOffsetX = targetOffset) } } )