feat: implemented unix domain socket helper header and tests

include/UnixIpcBridge.hpp

@@ -0,0 +1,31 @@
+// UnixIpcBridge.hpp
+// SPDX-License-Identifier: GPL-3.0-only
+// Author: Unai Blazquez <unaibg2000@gmail.com>
+
+#pragma once
+#include <fcntl.h>  // non‑blocking
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>  // close()
+
+#include <string>
+
+///@brief Small bridge to allow the producer class to send data over UNIX domain
+/// sockets
+class UnixIpcBridge
+{
+ public:
+  ///@brief constructor
+  ///@param socket path pointing the socket
+  explicit UnixIpcBridge(const std::string& socket_path);
+
+  ///@brief sending function, this goes into the producer
+  ///@param integer to send over the socket
+  void send(int value);
+
+ private:
+  std::string m_socket_path;
+  int m_socket_fd = -1;
+
+  void connect_to_consumer();
+};