feat(example): update with-react-native-web, Expo SDK 51 & Expo Router (File-based routing) (#9872)
### Description
Updated Expo SDK to 51 and added expo router with file-based routing
setup.
Updated dependencies to match expo sdk requirements.
Changed `TouchableOpacity` to `Pressable` in the packages/ui as the
former is deprecated.
### Testing Instructions
Changes can be verified by running dev script.
I've tested both Expo Go and development build (with JDK 17) for native
app and nextjs's usual working.
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Signed-off-by: shinjith-dev <shinjithpallikkara@gmail.com>