Allow the angular project to set styles config without using `browserTarget` in order to rely on another builder's config.
Very useful in the case of a library where you don't have an application but you want to configure styles in storybook like an app
only tsConfig is required and can be directly given to storybook using new Angular builder for SB
should allow project with only lib, without `@angular-devkit/build-angular:browser` to complete the configuration, to work more simply
The builder allows to add a "architect" in angular.json to start storybook
config ex :
```
"storybook": {
"builder": "@storybook/angular:start-storybook",
"options": {
"browserTarget": "angular-cli:build",
"port": 4400
}
```
cmd : `ng run angular-cli:storybook`
With this solution it is possible to have several angular projects using different assets and style
