remember Parallax Toolbar State
fun rememberParallaxToolbarState(scrollState: ScrollState = rememberScrollState(), lazyListState: LazyListState = rememberLazyListState(), initiallyCollapsed: Boolean = false): ParallaxToolbarState(source)
Creates and remembers a ParallaxToolbarState. Pass your own scrollState or lazyListState to share scroll position with other components; otherwise fresh ones are remembered.
Parameters
initially Collapsed
Whether the header starts collapsed the first time it is shown. Later restorations keep whatever fraction was saved.