Make AMD supported

[dimalmfao]

Make AMD cards supported. I'll maybe write the dockerfile, I'll see if I have time.
Just reminder to make AMD
because i think people have short memory.
replace your memory for a new-one too.

[Vectorrent]

Thanks for submitting this. AMD support should be doable, with a little bit of work.

[Vectorrent]

I've taken this as far as I can take it, without an AMD GPU to develop with. I need someone to set...

DEVICE='amd'

...in their .env file, then to use the "build" task from controller.sh or controller.ps1.

[dimalmfao]

Sadly, I don't have control over an AMD GPU anymore...

[Vectorrent]

I looked into this. While I think it should be possible, I have some questions:

1. How do we expose an AMD GPU to Docker Compose?
2. Can AMD make use of torch.cuda() calls? (I'm almost certain it can)
3. Can AMD GPUs work on Windows (almost certainly not without WSL; but neither can Nvidia, I don't think)

I think the code base is mostly ready for trying to do this. Would just need an interested person with some technical experience, able to help finalize the process.