add documentation for those who want to contribute to this project

[themxp]

it might be good if we add an .md file or put it in the wiki as guidance for those who want to contribute to this project, bc I see there’s no documentation yet

[ADRFranklin]

Yeah, this project has been mostly me jumping in doing some stuff and then being busy for months at a time, so I've never gotten around to updating documentation, and guides for sampctl.

I don't like using github pages, so I might re-write it in to markdown documents under the docs folder, and then link to it from the readme.

There is a lot to document too, I've fallen very far behind on it.