Ship with example components

Problem/Motivation

Sometimes it's not easy/clear how things are supposed to work without seeing needed frontend components.

Proposed resolution

Ship with example components in folder examples/vue3/*, so we have vue3 components and the option to add other components (react, astro, ..) as well.

Furthermore we could add a nuxi-command to nuxtjs-drupal-ce that takes over the example components of a Drupal installation and copies them into the components folder.