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/bread-compact-wifi-s3cam/compact_wifi_board_s3cam.cc

@@ -1,5 +1,5 @@
 #include "wifi_board.h"
-#include "audio_codecs/no_audio_codec.h"
+#include "codecs/no_audio_codec.h"
 #include "display/lcd_display.h"
 #include "system_reset.h"
 #include "application.h"
@@ -7,7 +7,6 @@
 #include "config.h"
 #include "mcp_server.h"
 #include "lamp_controller.h"
-#include "iot/thing_manager.h"
 #include "led/single_led.h"
 #include "esp32_camera.h"
 
@@ -179,24 +178,12 @@ private:
         });
     }
 
-    // 物联网初始化，添加对 AI 可见设备
-    void InitializeIot() {
-#if CONFIG_IOT_PROTOCOL_XIAOZHI
-        auto& thing_manager = iot::ThingManager::GetInstance();
-        thing_manager.AddThing(iot::CreateThing("Speaker"));
-        thing_manager.AddThing(iot::CreateThing("Screen"));
-#elif CONFIG_IOT_PROTOCOL_MCP
-
-#endif
-    }
-
 public:
     CompactWifiBoardS3Cam() :
         boot_button_(BOOT_BUTTON_GPIO) {
         InitializeSpi();
         InitializeLcdDisplay();
         InitializeButtons();
-        InitializeIot();
         InitializeCamera();
         if (DISPLAY_BACKLIGHT_PIN != GPIO_NUM_NC) {
             GetBacklight()->RestoreBrightness();