- create a new error class for vulkan errors as they are only recoverable during initialization (unlike CRecoverableError which is recoverable during normal processing)

- improve vulkan errors by including the status code returned by vulkan if they fail

src/win32/hardware.cpp

@@ -137,7 +137,7 @@ void I_InitGraphics ()
 		{
 			Video = new Win32VulkanVideo();
 		}
-		catch (CRecoverableError &error)
+		catch (CVulkanError &error)
 		{
 			Printf(TEXTCOLOR_RED "Initialization of Vulkan failed: %s\n", error.what());
 			Video = new Win32GLVideo();