Implement aeon console connection.

[TarantoolBot]

Command allow connect to Enterprise Aeon database with specified URL.
Available command options:

• sslkeyfile <private_key> - path to private part of certificate.
• sslcertfile <pub_cert> - path to public part of certificate.
• sslcafile <ca_file> - path to root CA for self-signed certificate.
• transport [ssl|plain] - connection mode.
  Requested by @dmyger in tarantool/tt@ea54ff6.