CI: Add a build of imgui_impl_vulkan.cpp with IMGUI_IMPL_VULKAN_NO_PROTOTYPES defined. (#4151, #3759, #3227)
CI: Add a build of imgui_impl_vulkan.cpp with IMGUI_IMPL_VULKAN_NO_PROTOTYPES defined. (#4151, #3759, #3227)

nProtect/imgui,Flix01/imgui,bkaradzic/imgui,ggtucker/imgui,ocornut/imgui,Flix01/imgui,bkaradzic/imgui,bkaradzic/imgui,ggtucker/imgui,nProtect/imgui,ocornut/imgui,Flix01/imgui,nProtect/imgui,ocornut/imgui,ggtucker/imgui