report: add cwd to report

The diagnostic report currently contains command line
information, and the environment, which contains the PWD
environment variable. This combination covers the majority
of cases, but it would be useful to have the result of
uv_cwd() as an additional data point. This commit adds that
information.

PR-URL: https://github.com/nodejs/node/pull/27022


Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>