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
