Revert "Stop publish examples to mongoose repo"

This reverts commit 1a17e17c462bdd4e1d26d8742f8b7087273e04c2.

PUBLISHED_FROM=80028de308c9a021955d1425d2bfee8feb85f193

examples/mqtt_broker/Makefile

@@ -0,0 +1,4 @@
+PROG = mqtt_broker
+MODULE_CFLAGS = -DMG_ENABLE_MQTT_BROKER -DMG_ENABLE_HTTP=0
+SSL_LIB=openssl
+include ../examples.mk

examples/mqtt_broker/mqtt_broker.c

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ * This software is dual-licensed: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation. For the terms of this
+ * license, see <http://www.gnu.org/licenses/>.
+ *
+ * You are free to use this software under the terms of the GNU General
+ * Public License, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * Alternatively, you can license this software under a commercial
+ * license, as set out in <https://www.cesanta.com/license>.
+ */
+
+#include "../../mongoose.h"
+
+int main(void) {
+  struct mg_mgr mgr;
+  const char *address = "0.0.0.0:1883";
+  struct mg_connection *nc;
+  struct mg_mqtt_broker brk;
+
+  mg_mgr_init(&mgr, NULL);
+  mg_mqtt_broker_init(&brk, NULL);
+
+  if ((nc = mg_bind(&mgr, address, mg_mqtt_broker)) == NULL) {
+    fprintf(stderr, "mg_bind(%s) failed\n", address);
+    exit(EXIT_FAILURE);
+  }
+  nc->user_data = &brk;
+
+  printf("MQTT broker started on %s\n", address);
+
+  /*
+   * TODO: Add a HTTP status page that shows current sessions
+   * and subscriptions
+   */
+
+  for (;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+}