Update Expo Getting Started docs with new features

Add new features (Session Replay, Logs,…) to [https://docs.sentry.io/platforms/react-native/manual-setup/expo/](https://docs.sentry.io/platforms/react-native/manual-setup/expo/)

Should be on par with [https://docs.sentry.io/platforms/react-native/](https://docs.sentry.io/platforms/react-native/) afterwards