src: move GetOpenSSLVersion into node_metadata.cc

Instead of implementing it in node_crypto.cc even though the only
place that needs it is the `Metadata::Versions` constructor.

PR-URL: https://github.com/nodejs/node/pull/25115


Reviewed-By: Steven R Loomis <srloomis@us.ibm.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
Reviewed-By: James M Snell <jasnell@gmail.com>