Motivation: On Windows we call around 50 times `PrintDeps.exe` which
takes on a very fast machine 500+ms. On Linux we do it around 120 times
(`ldd`) which takes around 150ms.
This change validates the dependencies once on browser install (`npx
playwright install`). In case its failing, it will emit a warning, in
case of a success, it will create a marker file that the binary has been
validated. For future `launch()` calls, we'll read this file and if
exists, we'll not validate again. Otherwise we'll validate again.
Note: If the marker file is older than 30 days, the browser will be
validated again.
Additionally introduce `@playwright/browser-<browser>` packages that
just download the respective browser, but do not export anything.
References #26614.
Dmitry Gozman