vulkaninfo: Use filename in json output desc
vulkaninfo: Use filename in json output desc

Query the current file name so it can be used when printing out the description
for the json formats. This is relevant because the windows SDK alters the name
of vulkaninfo to vulkaninoSDK and we want this to be present in the output.

KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools