* Make multiple MacOS variants targeting different Metal versions
Different MacOS versions support different maximum Metal versions. As we build on MacOS 14, it's
likely that when embedding the Metal shaders into the Metal backend they're being built for
Metal 3.1, the maximum supported version on MacOS 14. This may be why users are seeing crashes
when trying to use Metal on older versions of MacOS
This will also allow users of MacOS 15 and newer to take advantage of improvements from Metal 3.2
* Fix checking incorrect env var for MacOS version
* refactor: Update whisper model path and enable hipBLAS acceleration
* refactor: Update whisper model path and enable hipBLAS acceleration
* refactor: Update whisper model path and enable hipBLAS acceleration
* refactor: Update whisper model path and enable hipBLAS acceleration
* refactor: Update whisper model path and enable hipBLAS acceleration
* refactor: Update whisper model path and enable CoreML acceleration