[2.0.0-beta4] Use Drupal entities & plugins for the Library pages

Views field will be component metadata properties, and we can apply formatters to them.

Florent (Grimpreaper) is suggesting to have a look on https://www.drupal.org/project/views_remote_data → and its example of a Views Query plugin. The demo module is worth to check: https://git.drupalcode.org/project/views_remote_data/-/tree/1.0.x/tests/...

Also, like the Core "content" view, if it is deleted by site builder, a "fallback" controller is doing the job instead.

Moved to beta 1

Not enough time left in Beta1.

Moved to beta3. Let's finish the story format before.

The underlying API are changing so much, this issue will need heavy changes too