Non-flat Angular components generation

[shultiaiev-tp]

Up until recently, the CLI was generating Angular components in their own folders by default. Then, it was changed and now all components are generated flat. It would be great if we could have a flag for the CLI to instruct it to generate a folder for the new component to not re-type the component's name over and over when generating components. Especially, we would like to set this flag in the nx.json so that the whole project would be generating folders for components by default.