feat(*): initial implementation

[andrewrynhard]

Implements:

• A kernel built with options required by Kubernetes and additionally:
  • enables kernel level autoconfiguration for networking
  • enables devtmpfs to remove the need for tools like udev
• A custom init that:
  • mounts the /dev, /proc, /sys, and /run file systems
  • mounts the root disk based on labels
  • Performs the equivalent of a switch_root
  • Sets up the croups in /sys/fs/cgroup/
  • Is packaged in an initramfs that can be expanded upon for advanced customization of a node in the early user space
• A root file system that is stripped down to only what is required by Kubernetes
• A build that outputs:
  • RAW disk image with extlinux bootloader
  • VMDK disk image with extlinux bootloader
  • ISO image with isolinux bootloader
  • vmlinuz
  • initramfs.xz
  • rootfs image

The basis for the Linux build is inspired by LFS.