Add GHA to run cargo build

Add output to README.md so it looks nice

Add link to lwn.net article on KVM API

Remove unecessary MapFlags::MAP_ANONYMOUS flag

Copy across some hand-crafted 16-bit x86 code for a demo

Kick off VM in real mode

Implement kvm_{get,set}_sregs() and kvm_set_regs() functions

Move VCPU and kvm_run init into vcpu_init() function

Move VM and memory slot init into vm_init() function

Add some more links to useful crates

Set userspace memory for the VM

Create storage for kvm_run struct using mmap()

Fix broken link

Create VCPU

Add some comments