As described in the goals for this project, we want cloud-hypervisor VMM to support direct device assignment that's achieved through VFIO.

Tracked through PR #60

TODO

• Add VFIO bindings crate
• Add VFIO API wrappers
• Add VFIO PCI support
• Map device memory regions into the guest
• Remap host interrupts to guest ones
• Add VFIO integration test
• Add VFIO documentation (usage and arch)