mqtt: Set state on stoping; Add error code to Subscribed event

* Update submodule: git log --oneline ae53d799da294f03ef65c33e88fa33648e638134..fde00340f19b9f5ae81fff02ccfa9926f0e33687

Detailed description of the changes:
* Fix the default configuration for event queue
  - See merge request espressif/esp-mqtt!153
  - See commit espressif/esp-mqtt@fb42588
* Adds missing header.
  - See merge request espressif/esp-mqtt!152
  - See commit espressif/esp-mqtt@8a60057
* Moves state change when stopping the client
  - See merge request espressif/esp-mqtt!150
  - Closes espressif/esp-mqtt#239
  - See commit espressif/esp-mqtt@3738fcd
* Adds error code to MQTT_EVENT_SUBSCRIBED in case of failure
  - See merge request espressif/esp-mqtt!143
  - - Closes espressif/esp-mqtt#233
  - See commit espressif/esp-mqtt@9af5c26
* Adds debug information on sending dup messages
  - See merge request espressif/esp-mqtt!145
  - See commit espressif/esp-mqtt@47b3f9b
* ci: Fix qemu build
  - See merge request espressif/esp-mqtt!147
  - See commit espressif/esp-mqtt@68e8c4f
* ci: Build and Test QEMU on v5.0
  - See merge request espressif/esp-mqtt!142
  - See commit espressif/esp-mqtt@9db9ee7
* client: Add support for user events
  - See merge request espressif/esp-mqtt!140
  - Closes espressif/esp-mqtt#230
  - See commit espressif/esp-mqtt@97503cc
* Adds unregister event API
  - See merge request espressif/esp-mqtt!139
  - Closes #9194
  - See commit espressif/esp-mqtt@a9a9fe7

components/mqtt/CMakeLists.txt

@@ -8,6 +8,6 @@ idf_component_register(SRCS "${srcs}"
                     INCLUDE_DIRS esp-mqtt/include
                     PRIV_INCLUDE_DIRS "esp-mqtt/lib/include"
                     REQUIRES esp_event tcp_transport
-                    PRIV_REQUIRES esp_timer http_parser esp_hw_support
+                    PRIV_REQUIRES esp_timer http_parser esp_hw_support heap
                     )
 target_compile_options(${COMPONENT_LIB} PRIVATE "-Wno-format")

components/mqtt/Kconfig

@@ -124,6 +124,13 @@ menu "ESP-MQTT Configurations"
         help
             MQTT task priority. Higher number denotes higher priority.
 
+    config MQTT_EVENT_QUEUE_SIZE
+        int "Number of queued events."
+        default 1
+        depends on MQTT_USE_CUSTOM_CONFIG
+        help
+            A value higher than 1 enables multiple queued events.
+
     config MQTT_TASK_CORE_SELECTION_ENABLED
         bool "Enable MQTT task core selection"
         help

components/mqtt/host_test/CMakeLists.txt

@@ -3,6 +3,7 @@ cmake_minimum_required(VERSION 3.16)
 include($ENV{IDF_PATH}/tools/cmake/project.cmake)
 set(COMPONENTS main)
 list(APPEND EXTRA_COMPONENT_DIRS
+                                 "mocks/heap/"
                                  "$ENV{IDF_PATH}/tools/mocks/esp_hw_support/"
                                  "$ENV{IDF_PATH}/tools/mocks/freertos/"
                                  "$ENV{IDF_PATH}/tools/mocks/esp_timer/"

components/mqtt/host_test/mocks/heap/CMakeLists.txt

@@ -0,0 +1,4 @@
+idf_component_get_property(original_heap_dir heap COMPONENT_OVERRIDEN_DIR)
+
+idf_component_register(SRCS heap_mock.c
+  INCLUDE_DIRS "${original_heap_dir}/include")

components/mqtt/host_test/mocks/heap/heap_mock.c

@@ -0,0 +1,16 @@
+/*
+ * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "esp_heap_caps.h"
+#include <stdint.h>
+#include <stdlib.h>
+
+
+
+void *heap_caps_calloc(size_t n, size_t size, uint32_t caps) {
+  (void)caps;
+  return calloc(n, size);
+
+}