Merged in feature/SW-3595-sas-info-boxes (pull request #3177)

Feature/SW-3595 Add info boxes to SAS start page & Eurobonus alert to select-hotel page on SAS

* wip

* feat(SW-3595): Add info boxes to SAS start page

* Add InfoBox to design-system
* Add background gradient to SAS start page

* update variable naming and conditionalize the eurobonus message on select-hotel

* SAS startpage update default message

* make select-hotel a bit more generic with slot={} instead of alert={}


Approved-by: Anton Gunnarsson

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

@@ -0,0 +1,53 @@
+import type { Meta, StoryObj } from '@storybook/nextjs-vite'
+import { expect } from 'storybook/test'
+import { InfoBox, Props } from './InfoBox'
+import { IconName } from '../Icons/iconName'
+
+const meta: Meta<typeof InfoBox> = {
+  title: 'Components/InfoBox',
+  component: InfoBox,
+  parameters: {
+    layout: 'padded',
+  },
+  tags: ['autodocs'],
+}
+
+export default meta
+type Story = StoryObj<typeof meta>
+
+export const Default: Story = {
+  args: {
+    theme: 'Default',
+    icon: IconName.Accessibility,
+    heading: 'Heading',
+    text: 'This is an informational message',
+  },
+  argTypes: {
+    icon: {
+      control: { type: 'select' },
+      options: Object.values(IconName),
+    },
+    theme: {
+      control: { type: 'select' },
+      options: ['Default', 'SAS-Blue'] satisfies Props['theme'][],
+    },
+  },
+
+  play: async ({ canvas, args }) => {
+    const article = await canvas.findByRole('article')
+    await expect(article).toBeVisible()
+
+    const heading = await canvas.findByRole('heading', { name: args.heading })
+    await expect(heading).toBeVisible()
+
+    const paragraph = await canvas.findByText(args.text)
+    await expect(paragraph).toBeVisible()
+  },
+}
+
+export const WithoutIcon: Story = {
+  args: {
+    heading: 'Heading',
+    text: 'This is an informational message',
+  },
+}