feat: add logging for periodic ping in OverteClient poll method

src/OverteClient.cpp

@@ -396,6 +396,7 @@ void OverteClient::poll() {
         auto now = std::chrono::steady_clock::now();
         
         if (std::chrono::duration_cast<std::chrono::seconds>(now - lastPing).count() >= 1) {
+            std::cout << "[OverteClient] Sending periodic ping to domain (localID=" << m_localID << ")" << std::endl;
             sendPing(m_udpFd, m_udpAddr, m_udpAddrLen);
             lastPing = now;
         }