refactor: display decoded client type in utp logs (#1371)

portalnet/src/discovery.rs

@@ -418,7 +418,7 @@ impl Discv5UdpSocket {
 }
 
 /// A wrapper around `Enr` that implements `ConnectionPeer`.
-#[derive(Clone, Debug)]
+#[derive(Clone)]
 pub struct UtpEnr(pub Enr);
 
 impl UtpEnr {
@@ -433,6 +433,16 @@ impl UtpEnr {
     }
 }
 
+impl std::fmt::Debug for UtpEnr {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        let peer_client_type = self.client().unwrap_or_else(|| "Unknown".to_string());
+        f.debug_struct("UtpEnr")
+            .field("enr", &self.0)
+            .field("Peer Client Type", &peer_client_type)
+            .finish()
+    }
+}
+
 // Why are we implementing Hash, PartialEq, Eq for UtpEnr?
 // UtpEnr is used as an element of the key for a Connections HashTable in our uTP library.
 // Enr's can change and are not stable, so if we initiate a ``connect_with_cid`` we are inserting