Add shodan input support

[edoardottt]

Boggart now supports only raw input type, this means that it reads the honeypot configuration from the config.yaml file.

This feature should allow boggart to read the YAML config file with the type "shodan", read the IP address of the server we want to mimic and using the shodan.io API copies the behavior of the target server.

Let me know if you need more context / guidance. I'll be happy to help!