Add support for input

[Mochitto]

When creating a CLI it's likely that you will ask the user interactively the configuration on the first use of the app.

Without adding an interface to do this from type-config, a lot of repetition has to occur.

To make this easier, there should be an interface that automatically prompts the user for configuration and validates the input immediately.
A nice touch would be being able to define if to ask also for optional configuration or just the necessary one.