NavHostGraph 2.3.0 API

```
@Target(allowedTargets = {AnnotationTarget.ANNOTATION_CLASS}) 
public @interface NavHostGraph

                    
```
Like NavGraph but denotes a top level nav graph, i.e one that is not nested in any other nav graph (aka it doesn't have a parent). These are used to pass to com.ramcosta.composedestinations.DestinationsNavHost call.
RootGraph is one such graph that can be used out of the box.

Field Summary

Fields
Modifier and Type	Field	Description
`private final KClass<out NavHostAnimatedDestinationStyle>`	`defaultTransitions`
`private final String`	`route`
`private final CodeGenVisibility`	`visibility`