Add commands definitions

Author: andreagilardoni

src/message/Commands.h

@@ -0,0 +1,50 @@
+/*
+  This file is part of the ArduinoIoTCloud library.
+
+  Copyright (c) 2024 Arduino SA
+
+  This Source Code Form is subject to the terms of the Mozilla Public
+  License, v. 2.0. If a copy of the MPL was not distributed with this
+  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+*/
+
+#pragma once
+
+/******************************************************************************
+ * INCLUDE
+ ******************************************************************************/
+
+#include <stdint.h>
+#include <stddef.h>
+
+/******************************************************************************
+ * TYPEDEF
+ ******************************************************************************/
+
+enum CommandId : uint16_t {
+
+  /* Device commands */
+  DeviceBeginCmdId,
+  ThingBeginCmdId,
+  ThingUpdateCmdId,
+  DeviceRegisteredCmdId,
+  DeviceAttachedCmdId,
+  DeviceDetachedCmdId,
+
+  /* Thing commands */
+  LastValuesBeginCmdId,
+  LastValuesUpdateCmdId,
+  PropertiesUpdateCmdId,
+
+  /* Generic commands */
+  ResetCmdId,
+
+  /* Unknown command id */
+  UnknownCmdId
+};
+
+struct Command {
+  CommandId id;
+};
+
+typedef Command Message;