- Also refactored internals to use weak/shared pointers

- Refactored code to remove repetition and magic numbers

Co-authored-by: Tatsuya Shiozawa <shio.tatsu99@gmail.com>

To prevent too much disruption to people who have our public projects as
part of their build or testing systems we are temporarily ignoring a
warning about using Xcode 15.

This fixes a build failure on MacOS Sonoma when the copy plugin step
is enabled.

This allows real-time threads to join an audio workgroup on Apple platforms.

This fixes a warning when running xcodebuild directly