CLI Documentation

[Vad1mo]

We need to create and build some sort of documentation regarding the CLI and its basic and advances usage.

Ideally something that can used on the CLI but also in the online form in Markdown.

[criticic]

For many command-line users, one of the most used documentation, is the software's manpage, we can use a library like go-md2man, to convert our markdown documentations to man format.

[bupd]

We can use cobra/doc to automate docs generation in markdown and man for cli.