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/df-s3-ai-cam/config.json

@@ -6,8 +6,7 @@
             "sdkconfig_append": [
                 "CONFIG_ESP_PHY_MAX_WIFI_TX_POWER=10",
                 "CONFIG_ESP_PHY_MAX_TX_POWER=10",
-                "CONFIG_SPIRAM_MODE_OCT=y",
-                "CONFIG_IOT_PROTOCOL_MCP=y"
+                "CONFIG_SPIRAM_MODE_OCT=y"
             ]
         }
     ]

main/boards/df-s3-ai-cam/df_s3_ai_cam.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 "esp32_camera.h"
 
 #include "led/gpio_led.h"
@@ -30,12 +29,6 @@ class DfrobotEsp32S3AiCam : public WifiBoard {
         });
     }
 
-    // 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 InitializeCamera() {
         camera_config_t config = {};
         config.ledc_channel = LEDC_CHANNEL_2;   // LEDC通道选择  用于生成XCLK时钟 但是S3不用
@@ -73,13 +66,7 @@ class DfrobotEsp32S3AiCam : public WifiBoard {
     DfrobotEsp32S3AiCam() :
         boot_button_(BOOT_BUTTON_GPIO) {
         InitializeButtons();
-        InitializeIot();
         InitializeCamera();
-
-#if CONFIG_IOT_PROTOCOL_XIAOZHI
-        auto& thing_manager = iot::ThingManager::GetInstance();
-        thing_manager.AddThing(iot::CreateThing("Speaker"));
-#endif
     }
 
     virtual Led* GetLed() override {