Add openssl command

ProxyCommand works great for bastion hosts, but it doesn’t for ssh gateways, like haproxy, since there is no openssl command available in blink, while to connect to gateways it’s needed to use openssl s_client. Any chance we can get the openssl command in blink?
Thanks

Start by locating Blink's command registration and ProxyCommand or SSH gateway entry points; the issue does not name specific files or tests. Trace how shell commands are exposed on iOS and how openssl s_client is expected to support HAProxy gateways, then verify that the openssl command can be used for the described connection flow.

Written by the indexing model from the issue text.