Common

```kotlin class Fixed(private val count: Int) : StaggeredGridCells ``` Defines a grid with fixed number of rows or columns. For example, for the vertical [LazyVerticalStaggeredGrid](/jetpack-compose/androidx.compose.foundation/foundation/composable-functions/LazyVerticalStaggeredGrid) Fixed(3) would mean that there are 3 columns 1/3 of the parent width.