chore(schematics) - Set: "defaultConfiguration": "production". Add OnPush on feat component if required

[bjornharvold]

As default Angular CLI already does this, I'd like to ask that the DDD plugin does the same so we don't have to go in and edit angular.json every time.

• create libraries with defaultConfiguration set to production
• Add OnPush on dynamically generated feature if angular.json indicates that OnPush is the default strategy.

Thank you

[manfredsteyer]

For this, the feature generator needed to delegate to the component generator/schematic and then update the generated files accordingly. It's not on my roadmap but feel free to provide a PR.