[Feature] Client-Server Logging for remote browser mode

[puagarwa]

Let us know what functionality you'd like to see in Playwright and what your use case is. As of now, we have pw:channel and pw:protocol logs but these logs contain detailed info which is not suitable to debug client-server issues, it would be good to have a new logging level (say pw:network) which can log network activity between client and server over websocket connection. We can have event info and possibly payload size being transffered. Do you think others might benefit from this as well? Yes