* Fix clang Objective-C++ flags for macOS command line builds
* Fix getAssetPath() and getShaderBasePath() for macOS command line builds
* Protect debugUtilsMessageCallback() from failing when pMessageIdName is NULL
* Fix a few clang function override and mismatched type warnings
* Fix validation layer warnings on exit for computeraytracing example
* Fix regression in text visibility toggle for textOverlay example
* Support VK_USE_PLATFORM_METAL_EXT vs. deprecated VK_USE_PLATFORM_MACOS_MVK / DVK_USE_PLATFORM_IOS_MVK
* Check dynamic state features before enabling capabilities in dynamicstate example
* Fix vkCmdDraw() vertexCount argument (PARTICLE_COUNT) in particlesystem example
* Update examples list and restore benchmarking script (to top level)
* Fix validation warning in descriptorindexing example
* Fix device max recursion depth validation warnings in ray tracing examples
* Fix OpenMP build settings for texture3d example on all platforms
* Update and simplify build instructions for macOS
* Update CI script with correct library path for libomp on macOS x86_64
* Update CI scipt to install libomp prior to macOS builds
* Trying one more time to get the CI script working for macOS libomp
* Fix vertexCount argument using calculated size in particlesystem example
* Fix combined image descriptor offset calculation in descriptorbuffer example
* macOS: Support non-system level Vulkan SDK installs, with fallback to MoltenVK library
Use getAssetPath() instead of ASSET_PATH to support broader range of platforms.
Multisampling example determines sample rate from device at runtime.
Move example wrapper code from DemoViewController.mm to dedicated MVKExample.cpp file.
Remove AssImp libraries for iOS and macOS from repo, and add instructions for
generating them from AssImp source files.
Update general README.md file to mention support for iOS and macOS platforms.
Add Apple logo for README.md.
Update Vulkan logo to current registered TM logo.
Update copyright notice of MoltenVK example files to MIT license.
Examples use +/- on main keyboard, instead of numpad.
