Alan Agius d133ba68c0 feat(@angular/cli): add support for ng-add packages that should not be saved as dependencies
With this change the CLI offers a way for a package authors to specify if during `ng add` the package should be saved as a `dependencies`, `devDependencies` or not saved at all.

Such config needs to be specified in `package.json`

Example:
```json
  "ng-add": {
    "save": false
  }
```

Possible values are;
- false - Don't add the package to `package.json`
- true - Add the package to the `dependencies`
- `dependencies` - Add the package to the `dependencies`
- `devDependencies` - Add the package to the `devDependencies`

Closes #12003 , closes #15764 and closes #13237
2019-10-14 13:40:31 -07:00
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