Restore permissions to creator and display them as owners in the list (#4369)

* restore permissions to creator and display them as owners in the list

* improved the code to use actually 5 roles in the app to distinguish a real creator from an owner

ElementX/Sources/Screens/RoomChangeRolesScreen/RoomChangeRolesScreenModels.swift

@@ -35,7 +35,8 @@ struct RoomChangeRolesScreenViewState: BindableState {
     /// The screen's title.
     var title: String {
         switch mode {
-        case .administrator:
+        case .creator, .owner, .administrator:
+            // TODO: Handle the creator permissions change
             L10n.screenRoomChangeRoleAdministratorsTitle
         case .moderator:
             L10n.screenRoomChangeRoleModeratorsTitle

ElementX/Sources/Screens/RoomChangeRolesScreen/RoomChangeRolesScreenViewModel.swift

@@ -64,7 +64,7 @@ class RoomChangeRolesScreenViewModel: RoomChangeRolesScreenViewModelType, RoomCh
         case .demoteMember(let member):
             demoteMember(member)
         case .save:
-            if state.mode == .administrator, !state.membersToPromote.isEmpty {
+            if state.mode.isAdminOrHigher, !state.membersToPromote.isEmpty {
                 showPromotionWarning()
             } else {
                 Task { await save() }

ElementX/Sources/Screens/RoomChangeRolesScreen/View/RoomChangeRolesScreenSection.swift

@@ -24,7 +24,7 @@ struct RoomChangeRolesScreenSection: View {
                                              isSelected: isMemberSelected(member)) {
                         context.send(viewAction: .toggleMember(member))
                     }
-                    .disabled(member.role == .administrator)
+                    .disabled(member.role.isAdminOrHigher)
                 }
             } header: {
                 Text(title)
@@ -40,6 +40,6 @@ struct RoomChangeRolesScreenSection: View {
     
     private func isMemberSelected(_ member: RoomMemberDetails) -> Bool {
         // We always show administrators as selected, even on the moderators screen.
-        member.role == .administrator || context.viewState.isMemberSelected(member)
+        member.role.isAdminOrHigher || context.viewState.isMemberSelected(member)
     }
 }