[Feature Request] Add `Scaffold` like Jackpat Compose and Flutter does

I notice that React Native Paper doesn't provide a component that useful to building page called `Scaffold`, it could be powerful for programmer.

The issue names no implementation files or tests. Start by reviewing React Native Paper's existing component patterns and comparing the Scaffold APIs in Jackpat Compose and Flutter; done means the component's scope, API, and expected page-building behavior are clearly defined before implementation.

Written by the indexing model from the issue text.