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/IconButton/IconButton.stories.tsx

@@ -7,7 +7,7 @@ import { IconButton } from './IconButton'
 import { config } from './variants'
 
 const meta: Meta<typeof IconButton> = {
-  title: 'Components/IconButton',
+  title: 'Core Components/IconButton',
   component: IconButton,
   argTypes: {
     onPress: {