feat: puppeteer in the browser (headless mode)

[Aslemammad]

After a long time, this PR tries to add puppeteer as a headless browser to the web-runner.

• Puppeteer
• Headless mode (CI)
• Reviewed by @JessicaSachs @userquin as the main browser contributors
• Run mode does not work for vitest browser, fix it

[JessicaSachs]

@Aslemammad whenever you're ready for me to look at this, add some steps to test and I'll play with it. 😄

[userquin]

Once build Vitest, you can run browser tests using one of the folllowing commands (change to test/browser folder):

• pnpm vitest --browser --puppeteer
• pnpm vitest --browser --puppeteer --headless
• pnpm vitest run --browser --puppeteer
• pnpm vitest run --browser --puppeteer --headless

[Aslemammad]

@userquin @antfu I'd like to see what is remaining for this PR and what should be done, so I'd work on it! Let me know.

[christian-bromann]

Would the Vitest team be interested in a WebdriverIO integration as an alternative that uses WebDriver as automation standard?

[Aslemammad]

@christian-bromann Sure, we can discuss it! The reason why I started using puppeteer, is the easy steps that it needed for the integration! And it was straightforward. We can reconsider. Let me know in the Vitest official discord or even My DMs.

[Aslemammad]

Let's close this in favor of #2999