Re-organize kvm file layout for easier use

[kashalls]

Currently, all of the kvm functions are under one "kvm" package. I think it would be more beneficial as this project becomes active in the future to condense the features under one package.

All of the files are in the root of the repository which is tacky and hard to search through.
I propose we implement the same style of https://github.com/golang-standards/project-layout which is a basic layout and is not an official standard. I've adopted this layout and it has made so much of a difference when others work on my projects.

We would essentially keep cmd/ to keep our entry executables, moving /main.go into cmd/kvm/main.go as cmd/main.go just calls that.. We would move some of the some of the functions into their own packages under a internal/ directory. Any future public clients we would want to write and be importable under pkg/

[tutman96]

Having a pkg directory would be helpful for plugins so that we could publish interfaces and other utilities for plugin developers

[kashalls]

As of now, implementing this would be considered an entire rewrite. Implementing and merging this would cause lots of PRs to be adjusted. I am thinking about either having this be done with the plugin system or the logging implementation.

[tutman96]

the key is to do it one bit at a time like with #28 otherwise yeah, it stops up a bunch of in-progress work