Add skeleton for the radio mesh simulator

test/mesh/star.h

@@ -0,0 +1,10 @@
+// Copyright (c) 2026 Cesanta Software Limited
+// All rights reserved
+//
+// Star mesh: one hop, nodes talk to a bridge
+
+#pragma once
+
+#include "l2_mesh.h"
+
+extern const struct mg_mesh mg_mesh_star;