Add ability to upload ssl certs using CLI

[tzmanics]

It will reduce copy/paste errors. Possible flow:

$ modulus project ssl create <Choose project> Which domain is this certificate for? www.example.com (if the domain doesn't exist, just create it on the project automatically) Path to private key file? /path/to/example.key Path to certificate file? /path/to/example.crt Does this certificate have an intermediate certificate (yes)? yes Path to intermediate certificate? /path/to/caroot.crt Does this certificate have any other intermediate certificates (yes)? no Saving SSL certificate for www.example.com [check] SSL certificate successfully saved