Interactive Mode for License Generator

[JeffAlyanak]

In pursuit of a more streamlined user experience, I think it's worthwhile to give the license generator an interactive mode of operation.

Similar to how openssl operates when generating a key, it can ask for for the requisite details and offer reasonable defaults where applicable (business name for org licenses).

Something along the lines of:

$  What would you like to generate, a [u]ser license or an [o]rg license?
$  Enter your selection, default is [u]ser license: 

$ o

$ Please enter a business name for the org license, default is [BitBetter]: 

$ MyCompany

$ Please enter the Install-ID used to install the server:

I'm thinking that the parameters -i and --interactive would be used for this mode, with the existing operation being unchanged.

[JeffAlyanak]

Interactive mode complete and awaiting merging.