Generate screenshot automatically

Currently, the screenshot in the README is created manually by me. The process can be easily automated, though. So far, my steps are:

1. Start dev server
2. Select element with the buttons (.specimen)
3. Make a screenshot of node
4. Resize
5. Save

But I think this all can be replaced with Playwright and Sharp.

import { firefox } from 'playwright';

const browser = await firefox.launch();
const context = await browser.newContext();
const page = await context.newPage();
await page.goto('https://localhost:5173/');
const buffer = await page.locator('.shareon.specimen').screenshot();
// TODO: learn Sharp

Then, put it into CI and run on icon/button changes. Can be a nice weekend project.