aqhome: Started rewriting endpoints for version 2 of the msgio interface.

This interface is much simpler.
First rewritten endpoint is that for MQTT.

aqhome/mqtt/endpoint2_mqttc.h

@@ -0,0 +1,44 @@
+/****************************************************************************
+ * This file is part of the project Gwenhywfar.
+ * Gwenhywfar (c) by 2023 Martin Preuss, all rights reserved.
+ *
+ * The license for this file can be found in the file COPYING which you
+ * should have received along with this file.
+ ****************************************************************************/
+
+#ifndef AQH_ENDPOINT2_MQTTC_H
+#define AQH_ENDPOINT2_MQTTC_H
+
+
+#include <aqhome/api.h>
+
+#include <gwenhywfar/endpoint2.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/**
+ */
+AQHOME_API GWEN_MSG_ENDPOINT2 *AQH_MqttClientEndpoint2_new(const char *clientId,
+                                                           const char *host, int port,
+                                                           const char *name, int groupId);
+
+AQHOME_API uint16_t AQH_MqttClientEndpoint2_GetKeepAliveTime(const GWEN_MSG_ENDPOINT2 *ep);
+AQHOME_API void AQH_MqttClientEndpoint2_SetKeepAliveTime(GWEN_MSG_ENDPOINT2 *ep, uint16_t i);
+
+
+AQHOME_API int AQH_MqttClientEndpoint2_StartConnect(GWEN_MSG_ENDPOINT2 *ep);
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif
+
+