add network_io folder

examples/zmq_receiver_example.cpp

@@ -0,0 +1,16 @@
+#include "aare/ZmqSocketReceiver.hpp"
+#include <fmt/core.h>
+#include <string>
+
+int main() {
+    std::string endpoint = "tcp://localhost:5555";
+    aare::ZmqSocketReceiver socket(endpoint);
+    socket.connect();
+    char *data = new char[1024 * 1024 * 10];
+    aare::zmqHeader header;
+    while (true) {
+        int rc = socket.receive(header, reinterpret_cast<std::byte *>(data));
+    }
+    delete[] data;
+    return 0;
+}