App embedding for iOS devices (iPhone, iPad, TV)

[mblomdahl]

Use the Expo org from #16 and configure the web-client to build (and publish?) an Apple iOS application. Document the procedure as needed.

Per @mykhailodanilenko talks, we should add Expo Code Push online JavaScript bundle updates.

[mykhailodanilenko]

other iOS todos:

• [ ] Update info.plist for background modes (https://docs.expo.dev/versions/latest/sdk/audio/#playing-or-recording-audio-in-background)