Support multiple roles in `user add-role` and `user remove-role`

[bucur-marian]

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

[danielbachhuber]

@mbucurcf Can you share a bit more detail about how you've wanted to use this in the real world?

[bucur-marian]

@danielbachhuber Hi! The use case was that I needed to add and remove multiple user roles. I.e.:
For a single user, I would need to remove the a, b & c roles, and then add the x, y, z user roles, which would require running the wp user add-role & wp user remove-role a total of 6 time (3 times each).
The number of removed & added roles would differ, but the idea is that you would need to run wp user add-role & wp user remove-role multiple times. On a local machine, it might not be that bad, but sending each command to a remote host, could add quite a bit of overhead (time to write & execute the commands).

[danielbachhuber]

@mbucurcf What if we updated wp user add-role and wp user remove-role to support multiple roles?

[bucur-marian]

@danielbachhuber That sounds good as well!