feat: seperate into lib and cli packages

soulseek-rs-lib/src/message/peer/transfer_response.rs

@@ -0,0 +1,27 @@
+use crate::{
+    message::{Message, MessageHandler},
+    peer::PeerMessage,
+};
+use std::sync::mpsc::Sender;
+
+pub struct TransferResponse;
+
+impl MessageHandler<PeerMessage> for TransferResponse {
+    fn get_code(&self) -> u8 {
+        41
+    }
+
+    fn handle(&self, message: &mut Message, sender: Sender<PeerMessage>) {
+        let token = message.read_int32();
+        let allowed = message.read_int8();
+        let reason = (allowed == 0).then(|| message.read_string());
+
+        sender
+            .send(PeerMessage::TransferResponse {
+                token,
+                allowed: allowed == 1,
+                reason,
+            })
+            .unwrap();
+    }
+}