daemon: reorg: use channels for comms instead of copying daemon arc/mutex

kordophoned/src/daemon/events.rs

@@ -0,0 +1,17 @@
+use tokio::sync::oneshot;
+use kordophone_db::models::Conversation;
+
+pub type Reply<T: Send> = oneshot::Sender<T>;
+
+pub enum Event {
+    /// Get the version of the daemon.
+    GetVersion(Reply<String>),
+
+    /// Asynchronous event for syncing all conversations with the server. 
+    SyncAllConversations(Reply<()>),
+
+    /// Returns all known conversations from the database.
+    GetAllConversations(Reply<Vec<Conversation>>),
+}
+
+