VulkanBuffer is a `struct` #347

Job	Run time
Android (Ubuntu)	3m 3s
cmake-build-macos (macOS - Clang (Xcode), macos-latest, Debug, clang, clang++, Xcode, -DLVK_WITH_...	6m 9s
cmake-build (Windows - MSVC 2022, windows-latest, Debug, cl, cl, Visual Studio 17 2022, -DLVK_WIT...	3m 48s
cmake-build (Ubuntu - Clang, ubuntu-latest, Debug, clang-15, clang++-15, Unix Makefiles)	2m 44s
cmake-build (Ubuntu - Clang (Wayland), ubuntu-latest, Debug, clang-15, clang++-15, Unix Makefiles...	2m 36s
	18m 20s

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