Refactor daemon_client.

- New file called utils created to contain the tools used by Daemon.
- The methods relative creation and load cfg are rewriten
- Now sharing_path and local_dir_state aren't inside cfg, they depend from cfg_dir and sharing_dir received from argparse (default value aren't change)
- SkipObserver moved in utils
- Many methods inside daemon now are trasnformed in function inside utils file.
- Some improves in loggin implemantation.