* 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
Pointer to a variable declared into a block statement is stored and used outside of the block by vkCreateInstance. This can lead to segmentation fault.
Move the declaration of validationExt/validationLayerName outside of the block to fix the crash.
Move `data/shaders` to `data/shaders/glsl`
Move `data/hlsl` to `data/shaders/hlsl`
Fix up shader paths in the cpp files to point to the new glsl location.
`data/shaders/hlsl/compile.py` still overwrites the glsl .spv files (for
now).
Issue: #723
