Add merge main script

[sophschneider]

WHY are these changes introduced?

Fixes #0000

WHAT is this pull request doing?

How to 🎩

🖥 Local development instructions 🗒 General tophatting guidelines 📄 Changelog guidelines

Copy-paste this code in playground/Playground.tsx:

import React from 'react';
import {Page} from '../src';

export function Playground() {
  return (
    <Page title="Playground">
      {/* Add the code you want to test in here */}
    </Page>
  );
}

🎩 checklist

• [ ] Tested on mobile
• [ ] Tested on multiple browsers
• [ ] Tested for accessibility
• [ ] Updated the component's README.md with documentation changes
• [ ] Tophatted documentation changes in the style guide