UI: Build out a base for a component library in $lib/components

[jouwdan]

As title, build out a base for a component library in $lib/components for the app. These components are to live separately to the learning object model, with specific data to be passed to them, thus ensuring they are reusable in any form.

This means building out a structure for the UI components to live in, an index to export and a visual tool to view the components (ie storybook).