Make --module input optional

[princejohnsantillan]

Currently this value is required, example: php artisan make:controller TestController --module=module-1

This PR allows for us to just select it from a list, example: php artisan make:controller TestController --module

[Wulfheart]

This would be so cool!

[ahinkle]

Nice one! Was looking for this as well.

[Wulfheart]

But we need to account that we want to create something in the /app folder as well.

[ahinkle]

I'm not sure if I'm following. This PR allows modular and non-modular files to be generated.

php artisan make:model Flight (creates in /app)

php artisan make:model Flight --module

php artisan make:model Flight --module=airport

[princejohnsantillan]

But we need to account that we want to create something in the /app folder as well.

If you don't add --module it will create it on the app folder by default.