Restores the ability to have example components rendered alongside the
code. This functionality was broken a while back by #53511.
To enable the embedded preview for an example, add `preview` and
`path=adev/src/content/expamples/component/to/render.ts` attributes to
the `<docs-code>` or `<docs-code-multifile>` tag.
Tested with one of the accessibility examples and it seems to work now.
PR Close#60778
Generate the `NavigationItem`-s as part of adev/shared-docs pipeline and use the output JSON files instead of the hardcoded objects in the `sub-navigation-data.ts`.
PR Close#59355
To increase the ease of development we are moving @angular/docs into the adev directory within this repo. While
we are doing this to improve our development experience in the short term, efforts are also in place
to maintain a division between this @angular/docs (shared) code and adev itself, so that it can be extracted
back out in the future when components is ready to leverage it as well.
PR Close#57132