fix(cli) support packageManager schematics option

[kesslerdev]

PR Checklist

Please check if your PR fulfills the following requirements:

• [x] The commit message follows our guidelines: https://github.com/nestjs/nest/blob/master/CONTRIBUTING.md
• [ ] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Other... Please describe:

What is the current behavior?

when create a new application the cli doesn't prompt for package manager before generating files and also doesn't send the right option to schematics

Issue Number: https://github.com/nestjs/schematics/issues/249

What is the new behavior?

the cli prompt for package manager before generating files and send the correct option packageManager

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[kesslerdev]

the build script seems broken :/

[kesslerdev]

related issue (build failure) https://github.com/zkat/npx/issues/100

[kamilmysliwiec]

Can you rebase your PR? We switched to CircleCI + different configuration, errors should be gone

[kesslerdev]

branch is rebased

[micalevisk]

I just tried your fork @kesslerdev well done! Can you please rebase it again?