CMakeLists.txt updated to fix, "visual studio project debug version giving error on flag Wextra"
CMakeLists.txt updated to fix, "visual studio project debug version giving error on flag Wextra"

SaschaWillems/Vulkan,SaschaWillems/Vulkan,ming4883/Vulkan,grim210/Vulkan,SaschaWillems/Vulkan,jpbruyere/Vulkan,SaschaWillems/Vulkan,ming4883/Vulkan,SaschaWillems/Vulkan,ming4883/Vulkan,grim210/Vulkan,jpbruyere/Vulkan