Allow creating a workspace without any projects

[Brocco]

Bug Report or Feature Request (mark with an x)

This is a feature request

Desired functionality

When creating a new workspace an application is created automatically, I would like to be able to create a new workspace with no applications inside.

Mention any other details that might be useful

This would be helpful for just creating a library without an application. Also it would permit creating all projects inside of the projects directory.

Proposal

Add a new option to the ng-new schematic named empty which would default to false, which can be used to create the workspace without any projects.

ng new my-workspace --empty
# or with an alias
ng new my-workspace -e

Consideration

This logic could be implemented as a custom schematic, but I feel that there is value in providing this in the default schematic collection to reach a broader audience, and at the same time making the default ng-new more extensible for other custom schematic collections that are based upon these default schematics.

UPDATE Another benefit of not generating a default application via this proposed flag is that when an application is added it will be created in the new projects folder (defaulted to projects). With the intention of using a monorepo the consistency of having all projects (apps & libs) in the same directory without special casing the initial project into the root allows for greater consistency for all projects.

[alexeagle]

The idea SGTM.
I'd like to keep all the options positive though, so let's have an option --createApplication which defaults to true.
ng new would create an application in the new workspace
ng new --createApplication=false would only make an empty workspace.

in theory we could also later add ng new --createLibrary=true but probably this makes the configuration space wider for little benefit.

edit changed from --createProject to --createApplication