Update the SSL/TLS connection options

Update the SSL/TLS connection options

Refactor common flags for SSL/TLS connection options.
Update SSL_CONF_cmd.pod to match ordering.
Rewrite much of the documentation.

Fixes #10160

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/10191)