Add CUDA 11.8 and alternative means of setting up cgo on Windows

[dalva24]

Hi,

After some initial problem I'm finally able to compile the cudatest/main.go in Windows 10. I need to add -LC:/cuda/v11.8/lib/x64 and -IC:/cuda/v11.8/include to cgoflags.go since the version of CUDA I just downloaded is now v11.8.

Perhaps there's a better way of future-proofing this entry? maybe rewriting the symlink method defined in readme to also include the version numbers like mklink /D C:\cuda "c:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v11.8\", then adding -LC:/cuda/lib/x64 to cgoflags.go?

Additionally as I already have an existing Go development environment setup, I had some difficulty compiling using the msys method defined in the readme. What I found is that by installing TDM-GCC, cgo simply works without further configuration. I'd like to add this on the readme if it's acceptable.

Thanks.

[sgaluzin]

I want to say thank you, your pull request helps me to run it on cuda@v12.2