tls: cli option to enable TLS key logging to file

Debugging HTTPS or TLS connections from a Node.js app with (for example)
Wireshark is unreasonably difficult without the ability to get the TLS
key log. In theory, the application can be modified to use the
`'keylog'` event directly, but for complex apps, or apps that define
there own HTTPS Agent (like npm), this is unreasonably difficult.

Use of the option triggers a warning to be emitted so the user is
clearly notified of what is happening and its effect.

PR-URL: https://github.com/nodejs/node/pull/30055


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>