feat(apple): add visionOS support

[eugenehp]

• compile and build coreaudio-sys based on feat(apple): added visionOS support coreaudio-sys#102
• refactored iOS example that runs on Mac/iOS. It also plays sounds on visionOS (yay) but crashes UI (will rewrite later)

Notes:

Ideally the example has to be rewritten in Swift, since it's first choice for most Mac devs these days (definitely for visionOS).

TODO:

• update Cargo.toml to include coreaudio-sys from the crates
• update Cargo.toml in examples/ios to include coreaudio-sys from the crates