Storybook: support generating stories for components in secondary entrypoints

Description

It seems that generating stories for components, using nx g @nrwl/angular:stories <project-name>, currently only works for components declared in the primary entrypoint of a library, not for components declared in secondary entrypoints.

Motivation

Since secondary entrypoints have been introduced in NX devtools 13.1 to enhance library architecture, support treeshaking, it makes sense to support being able to generate stories for the components declared in those entrypoints.

Suggested Implementation

Generate stories for both primary and secondary entrypoints when running nx g @nrwl/angular:stories <project-name>

Alternate Implementations

• Add an option to generate stories for all entrypoints like nx g @nrwl/angular:stories <project-name> --allEntrypoints
• Generate stories for components in a specific entrypoint like nx g @nrwl/angular:stories <project-name> --entrypoint=<entrypoint-name>

[mandarini]

Thanks for opening #11446 @SvenBudak !

[mandarini]

Hi there @pvds ! We’ll add this in the plans to take a look as a new feature. In the meantime, if you think you’re up for it, let me know if you want to give this a shot! I can help you out!