First approach: ScreenSpec

ScreenSpec.kt

sealed interface ScreenSpec {

    companion object {
        val allScreens = listOf<ScreenSpec>(
            LoginScreenSpec,
            SearchScreenSpec,
            MainFeedScreenSpec,
            ProfileScreenSpec
        )
    }

    val route: String

    val arguments: List<NamedNavArgument> get() = emptyList()

    val deepLinks: List<NavDeepLink> get() = emptyList()

    @Composable
    fun Content(
        navController: NavController,
        navBackStackEntry: NavBackStackEntry
    )
}