[GPU Support] Integrate with pci_fetch

[grtcdr]

Now that PCI devices, such as GPUs can be fetched (through pci_fetch) all that's left to do is, integrate pci_fetch with libmacchina.

Here's a demo of what pci_fetch can do:

https://user-images.githubusercontent.com/35816711/123189966-a5fdf900-d496-11eb-821b-3f3563f12bba.mp4

[grtcdr]

I wasn't paying attention, this is a duplicate of #35