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/esp-box-lite/esp_box_lite_board.cc

@@ -6,7 +6,6 @@
 #include "application.h"
 #include "button.h"
 #include "config.h"
-#include "iot/thing_manager.h"
 #include "assets/lang_config.h"
 
 #include <esp_log.h>
@@ -205,20 +204,12 @@ 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"));
-        thing_manager.AddThing(iot::CreateThing("Screen"));
-    }
-
 public:
     EspBoxBoardLite() : boot_button_(BOOT_BUTTON_GPIO) {
         InitializeI2c();
         InitializeSpi();
         InitializeIli9341Display();
         InitializeButtons();
-        InitializeIot();
         GetBacklight()->RestoreBrightness();
     }