feat: add logging support

src/message/peer/transfer_request.rs

@@ -0,0 +1,20 @@
+use crate::{
+    message::{Message, MessageHandler},
+    peer::PeerOperation,
+    types::Transfer,
+};
+use std::sync::mpsc::Sender;
+
+pub struct TransferRequest;
+impl MessageHandler<PeerOperation> for TransferRequest {
+    fn get_code(&self) -> u8 {
+        40
+    }
+    fn handle(&self, message: &mut Message, sender: Sender<PeerOperation>) {
+        let transfer = Transfer::new_from_message(message);
+
+        sender
+            .send(PeerOperation::TransferRequest(transfer))
+            .unwrap();
+    }
+}