fix(schematics): add workingDirectory to schemas

[timdeschryver]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/ngrx/platform/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Documentation has 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
[ ] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

Closes #3469

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

Old:

 npx ng add ngrx-store-14.0.0-local
ℹ Using package manager: npm
✔ Package information loaded.

The package ngrx-store-14.0.0-local will be installed and
executed.
Would you like to proceed? Yes
✔ Packages successfully installed.
The 'path' option in 'C:\Users\timde\dev\playgrounds\ng-fourteen\node_modules\@ngrx\store\schematics\ng-add\schema.json' is using deprecated behaviour.'workingDirectory' smart default provider should be used instead.
UPDATE src/app/app.module.ts (489 bytes)
UPDATE package.json (1227 bytes)
✔ Packages installed successfully.

New:

 npx ng add ngrx-store-14.0.0-local.tgz
ℹ Using package manager: npm
✔ Package information loaded.

The package ngrx-store-14.0.0-local.tgz will be installed and
executed.
Would you like to proceed? Yes
✔ Packages successfully installed.
UPDATE src/app/app.module.ts (470 bytes)
UPDATE package.json (1223 bytes)
✔ Packages installed successfully.

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[timdeschryver]

🤦 seems like the google books API suddenly returns the same books more than once.