daemon: implements post office

kordophone/src/tests/test_client.rs

@@ -93,15 +93,15 @@ impl APIInterface for TestClient {
 
     async fn send_message(
         &mut self, 
-        outgoing_message: OutgoingMessage,
+        outgoing_message: &OutgoingMessage,
     ) -> Result<Message, Self::Error> {
         let message = Message::builder()
             .guid(Uuid::new_v4().to_string())
-            .text(outgoing_message.text)
+            .text(outgoing_message.text.clone())
             .date(OffsetDateTime::now_utc())
             .build();
 
-        self.messages.entry(outgoing_message.conversation_id).or_insert(vec![]).push(message.clone());
+        self.messages.entry(outgoing_message.conversation_id.clone()).or_insert(vec![]).push(message.clone());
         Ok(message)
     }