Add asserts for ioctl() return values

Readability tweak for create_vm()

Refactor to use fewer explicit returns

Add kvm_{get,set}_regs() and kvm_{get,set}_sregs() wrappers

Extract KVM ioctl code into module

Working on kvm_run mmap()'d struct and calling kvm_run()

Create vCPU with kcm_create_vcpu()

Perform "cargo build" on GitHub push event

Add link to MS-DOS source code

Add basic README for project

Add asserts before wrapping raw fds

Create VM with kvm_create_vm()

Add pre-commit sample configuration

Convert /dev/kvm fd to std::os::fd:OwnedFd

Open /dev/kvm device