Introduce Realms management in admin console UI.
The Realms spec is attached to this ticket.
The goal for this ticket is to add the Realms management into the admin console UI.
The components created as the result of this ticket should be generic and reusable. The component which lists the realms along with possible operations, so called the Management component, shall be done in a generic way.
There are much more to add in terms of generic components in admin console, but it is envisioned to add complexity in steps. We are starting from a small well defined component like this, and will end up on the IDPs management page, which is much more complicated.