feat: create story for os cards

src/pages/ValidatorOnboarding/ValidatorSetup/ValidatorInstalling/OSCards.stories.tsx

@@ -0,0 +1,19 @@
+import type { Meta, StoryObj } from '@storybook/react'
+
+import OSCards from './OSCards'
+
+const meta = {
+  title: 'ValidatorOnboarding/OSCards',
+  component: OSCards,
+  parameters: {
+    layout: 'centered',
+  },
+  tags: ['autodocs'],
+} satisfies Meta<typeof OSCards>
+
+export default meta
+type Story = StoryObj<typeof meta>
+
+export const Default: Story = {
+  args: {},
+}