Refactor useDeviceOrientation hook

[LinusU]

Summary

Simplifies the code, and also fixes an issue where the initial value could be stale as described in #210

Test Plan

Will test this in a snack, will update with link shortly

What's required for testing (prerequisites)?

nothing special

What are the steps to reproduce (after prerequisites)?

change the orientation and observe the updated value

Compatibility

OS	Implemented
iOS	✅
Android	✅
Web	✅

Checklist

• [ ] I have tested this on a device and a simulator
• [n/a] I added the documentation in README.md
• [n/a] I updated the typed files (TS and Flow)
• [ ] I've created a snack to demonstrate the changes: LINK HERE