kordophone: add support for /messages

kordophone/src/model/conversation.rs

@@ -2,6 +2,10 @@ use serde::Deserialize;
 use time::OffsetDateTime;
 use uuid::Uuid;
 
+use super::Identifiable;
+
+pub type ConversationID = <Conversation as Identifiable>::ID;
+
 #[derive(Debug, Clone, Deserialize)]
 pub struct Conversation {
     pub guid: String,
@@ -28,6 +32,14 @@ impl Conversation {
     }
 }
 
+impl Identifiable for Conversation {
+    type ID = String;
+
+    fn id(&self) -> &Self::ID {
+        &self.guid
+    } 
+}
+
 #[derive(Default)]
 pub struct ConversationBuilder {
     guid: Option<String>,