Function
mapSaver
Common
```kotlin
public fun mapSaver(
save: SaverScope.(value: T) -> Map,
restore: (Map) -> T?,
): Saver
```
The `Saver` implementation which allows to represent your class as a map of values which can be
saved individually.
What types can be saved is defined by `SaveableStateRegistry`, by default everything which can be
stored in the Bundle class can be saved.
You can use it as a parameter for `rememberSaveable`.