cmake HELLOIMGUI_HAS_VULKAN examples

pthom/hello_imgui CMakeLists.txt :92 

option(HELLOIMGUI_HAS_VULKAN "Use Vulkan as a rendering backend" OFF)

pthom/hello_imgui hello_imgui_cmake/hello_imgui_build_lib.cmake :82 

message(WARNING "
        HELLOIMGUI_USE_GLFW_VULKAN is deprecated,
        use HELLOIMGUI_USE_GLFW3 + HELLOIMGUI_HAS_VULKAN instead")

pthom/hello_imgui hello_imgui_cmake/hello_imgui_build_lib.cmake :89 

message(WARNING "
        HELLOIMGUI_USE_SDL_VULKAN is deprecated,
        use HELLOIMGUI_USE_SDL2 + HELLOIMGUI_HAS_VULKAN instead")

pthom/hello_imgui hello_imgui_cmake/hello_imgui_build_lib.cmake :899 

target_compile_definitions(${HELLOIMGUI_TARGET} PUBLIC HELLOIMGUI_HAS_VULKAN)