Implement config CLI along with refactor of configuration adding more relevant options

[arades79]

While implementing the base level CLI, stubs were left to handle configuration from the CLI, however when looking into implementing it, the implementation seemed too messy to implement in a clean way. Thus the config should be refactored to make the CLI implementation easier. The config CLI can also be lifed into common code so both server and client can have good interfaces for settings/configuration, with server and client only extending with the options they need.