[Profile Showcase] Add `permissionsModel` in the communities model

[alexjba]

The profile showcase delegates need to display the community permissions the same way we're showing them in the community portal. We'll need the permissionsModel in the communities model similar to the curatedCommunitiesModel implementation.

          The `permissionsModel` is missing from the communities model. Adding a task to add it in nim

Originally posted by @alexjba in https://github.com/status-im/status-desktop/pull/13607#discussion_r1544871703