Feature Request

• Yes, I reviewed the contribution guidelines.

Describe your use case and the problem you are facing

A new cli command for toggling user roles.

Describe the solution you'd like

It might be beneficial to add a command to toggle user roles. It could look like:
wp user toggle-role user role1 role2 role3 ... rolen

• Notice that it could accept more than 1 role
• If a role is active, it will deactivated it
• If a role is inactive, it will activate it