Add logging for speed limit and traffic control commands

lib/wireguard/peers.dart

@@ -96,7 +96,9 @@ Future<bool> deletePeer(String publicKey) async {
 }
 
 Future<void> setSpeedLimit(String publicKey, int speedKbps) async {
+  print('Setting speed limit for peer $publicKey to ${speedKbps}kbps');
   final peerIP = await _getPeerIP(publicKey);
+  print('Found peer IP: $peerIP for publicKey: $publicKey');
   if (peerIP == null) throw Exception('Peer not found');
   
   await TrafficControlService.setSpeedLimit(peerIP, speedKbps);