Merged in feat/SW-3636-storybook-structure (pull request #3309)

feat(SW-3636): Storybook structure

* New sections in Storybook sidebar

* Group Storybook content files and add token files for spacing, border radius and shadows


Approved-by: Joakim Jäderberg

packages/design-system/lib/components/Card/Card.stories.tsx

@@ -3,7 +3,7 @@ import type { Meta, StoryObj } from '@storybook/nextjs-vite'
 import { Card } from './Card.tsx'
 
 const meta: Meta<typeof Card> = {
-  title: 'Components/Card',
+  title: 'Core Components/Card',
   component: Card,
 }