Api: Add a Waive Admin specific immobilization

[daleighan]

This needs to be added so that Waive Admins can immobilize Organization cars in a way such that Organization Admins cannot unlock them

[daleighan]

This will probably just consist of a flag (GroupRole) on the carl that indicates that it is waive admin immobilized. There also will need to be slight modifications to the lb interface for immobilization, and the group action function should support this.

[daleighan]

insert into group_roles (group_id, role_id, name, created_at, updated_at) values(4, 0, 'super-immobilized', NOW(), NOW());

[daleighan]

This can be done either in the bulk actions on the cars index page or on each cars show page. It is obviously only available to Waive Admins