More flexible handling for boolean arguments

[AhmedSoliman]

In argparse, we only generate an argument for the boolean to set to true but there is no way for the user to explicitly switch it off (pass False).

Our options:

1. Generate a '--no-X' argument automatically to toggle the boolean. (opinionated decision)
2. Give the user better control through the @argument to define the behaviour (needs spec)

[toti1212]

Hi @AhmedSoliman
I think other CLI frameworks take the 2nd approach, isn't it? For example, oclif permits to change the default behavior.

[AhmedSoliman]

@toti1212 Correct, this needs a design proposal though that we can agree on before we jump to implementation.