Print websocket address to stdout.

[akvadrako]

I was looking for something that would start a playwright server from the CLI that I could connect to via python. playwright-start looked good except it doesn't print out the websocket address.

It would be a nice addition if this script allowed to specify the wspath and port and also printed them to stdout.

[privatenumber]

Sounds good to me. playwright-start also writes it to this file:

playwright-start/src/ws-endpoint-file.ts

Line 3 in e6111a9

const WS_ENDPOINT_FILE = path.resolve(process.env.HOME, '.ws-endpoint');

Let's log the Websocket address and also the file path so that it can be programmatically read.

PR welcome!