Addon-docs: Angular ArgTypes for pipes, injectables, classes

[matheo]

Issue:

We document some Pipes, Services and Classes of the system,
but they were not extracted from the Compodoc documentation.

What I did

I included them in the typing and ArgTypes extraction.
The ArgsTable seems to need some tweaks to display the private stuff,
but it's still useful as it is right now.

[matheo]

@shilman any opinion about this?

[shilman]

@matheo Looks great!! 😍 Can you add examples to examples/angular-cli so I can see it working in the monorepo?

[matheo]

@shilman done!
we could add another option to controls to disable the warnings for some stories, like

{ controls: { showWarning: false } }

what do you think? I could have a simple PR to extend that if you agree.
PS/ and if you have a better name for that flag just share it ;)

[shilman]

What would showWarning: false do?

[matheo]

just hides the NoControlsWarning (inside ControlsPanel) in case we just don't want to have controls, nor have a warning in the panel :)
maybe there's a better name for this flag

[shilman]

Aha makes sense. hideNoControlsWarning: true ?