allow wizards in the CLI to let the user configure non-required inputs

we're creating wizards for creating new camel components and endpoints. Pretty much all of these have a large number of possible input properties. However most of them are not required.

I've hacked a multi-page wizard; the 2nd page adds all the non-required inputs to the builder. The CLI then ignores them all and accepts the default values

It would be nice if there a way prompt the user with something like...

Would you like to change any of the 12 inputs [Yn]: 

Y

[1] foo
[2] bar
...
[12] thingy...

2

enter the value for property bar with default value [123] :

456

property bar set to 456

Would you like to change any of the 12 inputs [Yn]: 

(repeat until n)

i.e. folks can just hit an extra enter to not bother entering any values, or they can keep hitting 'y' then picking the number of the input to change, then the value and enter