core: public groups - roster of privileged members (#7017)

apps/ios/SimpleXChat/ChatTypes.swift

@@ -2741,6 +2741,7 @@ public enum RelayStatus: String, Decodable, Equatable, Hashable {
     case new
     case invited
     case accepted
+    case acknowledgedRoster
     case active
     case inactive
     case rejected
@@ -2816,6 +2817,7 @@ extension RelayStatus {
         case .new: "new"
         case .invited: "invited"
         case .accepted: "accepted"
+        case .acknowledgedRoster: "acknowledged roster"
         case .active: "active"
         case .inactive: "inactive"
         case .rejected: "rejected"