Command for giving SFTP access #1712

If we want to configure SFTP on EE4, currently the following needs to be done manually. A command can be created to automate this.

The command cover the following:

• Add/Remove site's SFTP access.
• List, update/reset password.
• Take inputs such as which directories to include in SFTP for a particular site (CI/CD current folder compatible)
• Select port for SFTP
• Multiple SFTP users for the same site