v1.8.0: Audio 代码重构与低功耗优化 (#943)

* Reconstruct Audio Code

* Remove old IoT implementation

* Add MQTT-UDP documentation

* OTA升级失败时，可以继续使用

main/boards/doit-s3-aibox/doit_s3_aibox.cc

@@ -1,10 +1,9 @@
 #include "wifi_board.h"
-#include "audio_codecs/no_audio_codec.h"
+#include "codecs/no_audio_codec.h"
 #include "system_reset.h"
 #include "application.h"
 #include "button.h"
 #include "config.h"
-#include "iot/thing_manager.h"
 #include "led/gpio_led.h"
 #include <wifi_station.h>
 #include <esp_log.h>
@@ -100,12 +99,6 @@ private:
         });
     }
 
-    // 物联网初始化，添加对 AI 可见设备
-    void InitializeIot() {
-        auto& thing_manager = iot::ThingManager::GetInstance();
-        thing_manager.AddThing(iot::CreateThing("Speaker"));
-    }
-
 
     void InitializeGpio(gpio_num_t gpio_num_) {
         gpio_config_t config = {
@@ -128,7 +121,6 @@ public:
         // 上拉io48 置高电平
         InitializeGpio(GPIO_NUM_48);
         InitializeButtons();
-        InitializeIot();
     }
 
     virtual Led* GetLed() override {