Command line parameters in configuration

Refactor the command line interface moving the parameters parsing to the bin file.

Any parameter passed to the command line is now also available in attester configuration `globals` property.

This allows to configure parameters like `port` and `log-level` from the configuration file.
Values passed to the command line are still overriding the ones defined in the file.

This is a first step in the evolution of attester because it removes any `cli` information from the main attester module.