add CWD in server status output

README mentions that filenames are resolved relative to the server's CWD (current working directory) - rather than to the client's.

While it's technically possible to intrusively determine working path of a foreign process (with tools like `readlink /proc/$PID/cwd`, or `proceexp.exe` on Windows) — these methods are rarely userfriendly and mostly inconvenient for regular use (though excellent for troubleshooting/debug).

So, this addition can be very useful to simplify `hdevtools` setup and plugin integration, especially on Windows.