fix: deprecate CDP for Firefox

[OrKoN]

This PR adds a deprecation warning if Chrome DevTools Protocol (CDP) is used for Firefox. Instead CDP, use WebDriver BiDi:

import puppeteer from 'puppeteer';

const browser = await puppeteer.launch({
  product: 'firefox',
  protocol: 'webDriverBiDi',
});
const page = await browser.newPage();
...
await browser.close();

[Lightning00Blade]

LGTM + maybe we need a call to action if there encounter issues?

[OrKoN]

@Lightning00Blade code to action?

[Lightning00Blade]

@Lightning00Blade code to action?

Typo I wanted to say call to action as there is no issue way for a person to say this is not working file and issue or something else

[OrKoN]

@whimboo PTAL I think on our end we are ready to mark CDP support for Firefox as deprecated

[whimboo]

@whimboo PTAL I think on our end we are ready to mark CDP support for Firefox as deprecated

I thought that we wanted to do that after the announcement that Puppeteer fully supports Firefox via WebDriver BiDi. For me it feels a bit too early.

[OrKoN]

@whimboo we are only 13 tests away from feature-parity with CDP and 147 new tests are passing so I think it is fine to nudge users to try WebDriver BiDi and switch over.

[whimboo]

As discussed with the team we are fine with this addition. Also because you are not forcing Webdriver BiDi at this point as default which is fine.