initial commit

ios_client/EncryptedChat/Models/Invitation.swift

@@ -0,0 +1,9 @@
+import Foundation
+
+struct Invitation: Identifiable {
+    let id: String              // invitation id (from server) or conversationId
+    let conversationId: String
+    let conversationName: String
+    let invitedBy: String
+    let invitedByUsername: String
+}