Support for AMD GPUs?

[kulocora]

Thanks for making Whispering Tiger! It's been super helpful for me.

I was using it on my Radeon GPU and couldn't help but think - it would be amazing if Whispering Tiger could incorporate vendor-agnostic whisper ports like https://github.com/Const-me/Whisper so that AMD GPU users could benefit from GPU acceleration too!

Anyways, thanks a lot for all the work!