init(nix): adding the direnv for nix proposes

main.cpp

@@ -0,0 +1,11 @@
+#include <iostream>
+
+int main(int argc, char *argv[]) {
+	if (argc != 3) {
+		std::cerr << "Usage: " << argv[0] << " <port> <password>" << std::endl;
+		return 1;
+	}
+	std::cout << "Port:" << argv[1] << std::endl;
+	std::cout << "Password:" << argv[2] << std::endl;
+	return 0;
+}