Incorporate parts of project-wizard into "dylan new application"?

[cgay]

There is some overlap between what the project-wizard library does and dylan new application/library. Figure out whether code can be usefully shared between them. Currently project-wizard is win32-only and is itself a DUIM application so I suspect at a minimum it would need to be broken into two libraries.

Does project-wizard generate any test code? If not, we can share in both directions.

[cgay]

Generate Sphinx documentation skeleton.

Generating docs should be the default, to be turned off with --no-documentation.

Probably shell out to sphinx-quickstart and warn nicely on failure.