[REQ] A way to specify for generated code destination package

[dragosnutu]

Is your feature request related to a problem? Please describe.

When you have a lot of models it would be nice to organize them in package/subpackages.

Describe the solution you'd like

A solution would be to somehow be able to specify to each model/api a destination package

Describe alternatives you've considered

Alternative is to break the yaml spec file into smaller ones and to use the generator with target paths as configuration. This approach would mean also (if models are used from one file to another) to add imports mapping. Not that a good alternative but it works.

Additional context

If you have like 100 models it would be nice to have it organized into packages/subpackages, common packages, etc.