Feature/99 yaml config all cmd options

[ghost]

- Fix typo when loading module. VisorHandlerMock test passing
- Add modules configuration on config file
- Add CmdOption struct with possible cmd option to pkvisor main file
- Check config file and args before validating and executing each option
- Prioritize cmd options over config file

[weyrick]

Looks good, only one request: the rest of the YAML config files use underscores instead of dashes, so please change the config file version of the options to use underscore, e.g. "log_file" instead of "log-file"