By using the `strings` re-export from `@angular-devkit/schematics` instead of from `@angular-devkit/core`,
the number of imports from `@angular-devkit/core` has been reduced and lowers the direct dependency count
for many of the individual schematics.
With this change we removed several deprecated `@schematics/angular` deprecated options.
BREAKING CHANGE:
We removed several deprecated `@schematics/angular` deprecated options.
- `lintFix` have been removed from all schematics. `ng lint --fix` should be used instead.
- `legacyBrowsers` have been removed from the `application` schematics since IE 11 is no longer supported.
- `configuration` has been removed from the `web-worker` as it was unused.
- `target` has been removed from the `service-worker` as it was unused.
Currently when using `ivy-ngcc` it will print out a warning
```
Failed to read entry point info from //node_modules/@schematics/angular/workspace/files/package.json with error SyntaxError: Unexpected token < in JSON at position 1121.
```
Fixes#13378
This aligns options that do the same thing:
1) `skipSpecs` and `spec` has been deprecated in favor of `skipTests`.
2) `styleext` has been deprecated in favor of `style` since the latest is two words.
Fixes#12784
