tls: deprecate Server.prototype.setOptions()

This function was undocumented and only used in one place
throughout the codebase, plus a test.

PR-URL: https://github.com/nodejs/node/pull/23820


Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>