Set FAB position to EndDocked

MainActivity.kt

@Composable
fun ListScreen(state: MutableState<MutableList<Tweet>>) {
    val (scaffoldState, onScaffoldStateChange) = state {
        // state content collapsed
    }

    Scaffold(
        scaffoldState = scaffoldState,
        topAppBar = {
            // top app bar content collapsed
        },
        bottomAppBar = {
            // bottom app bar content collapsed
        },
        floatingActionButton = {
            AddTweetButton()
        },
        floatingActionButtonPosition = Scaffold.FabPosition.EndDocked,
        drawerContent = {
            TweetNavigation()
        },
        bodyContent = {
            TweetList(state)
        }
    )
}