Update documentation for proxy usage with cloakserve and CDP connection

[jarallahassalami]

I would like to suggest an update to the documentation to clarify the correct way to use a proxy, especially when working with the CDP server (cloakserve) and connecting via connect_over_cdp.

The current documentation clearly explains how to pass a proxy to the launch() function in the Python/JS wrapper (e.g., launch(proxy="http://...")). However, it can be confusing for users trying to use the CDP server.

I attempted to pass the proxy as a query parameter in the CDP URL like this:

browser = pw.chromium.connect_over_cdp("http://localhost:9222?proxy=http://proxy:8080&geoip=true")

This approach does not work, and it is not documented as an invalid method.

From my testing and understanding, the correct way is to pass the proxy to the cloakserve command itself using the --proxy-server argumen :

cloakserve --proxy-server=http://user:pass@proxy:8080

It would be very helpful to add explicit examples to the documentation (README.md or the relevant sections) covering:

1. How to run cloakserve with a proxy: Include command-line examples for both HTTP and SOCKS5 proxies.

2. How to connect a CDP client to the proxied cloakserve server: Show the correct connect_over_cdp call without the proxy parameter in the URL.

3. A note on geoip and other flags: Clarify if and how flags like geoip can be used with cloakserve (e.g., via command-line arguments or not at all), as the current documentation might imply they work in the CDP URL.

This update would prevent confusion and save time for users who, like me, assume that the proxy configuration should be part of the client-side connection string rather than the server startup configuration.

Thank you for considering this documentation improvement.