Add SenseCAP Watcher (#241)

* feat: add sensecap watcher board.

* feat(sensecap): Add button function.

* fix: fix compilation error.

* style:Modify code style.

* fix: fix wake bug

* fix: fix compilation error & Enable click to toggle state.

* style:  move sensecap_audio_codec files to sensecap board

* fix: Optimize shutdown.

main/boards/sensecap-watcher/README.md

@@ -0,0 +1,34 @@
+# 编译配置命令
+
+**配置编译目标为 ESP32S3：**
+
+```bash
+idf.py set-target esp32s3
+```
+
+**打开 menuconfig：**
+
+```bash
+idf.py menuconfig
+```
+
+**选择板子：**
+
+```
+Xiaozhi Assistant -> Board Type -> SenseCAP Watcher
+```
+
+**编译烧入：**
+
+```bash
+idf.py build flash
+```
+注意: 请特别小心处理闪存固件分区地址，以避免错误擦除 SenseCAP Watcher 的自身设备信息（EUI 等），否则设备可能无法正确连接到 SenseCraft 服务器！在刷写固件之前，请务必记录设备的相关必要信息，以确保有恢复的方法！
+
+您可以使用以下命令备份生产信息
+
+```bash
+# firstly backup the factory information partition which contains the credentials for connecting the SenseCraft server
+esptool.py --chip esp32s3 --baud 2000000 --before default_reset --after hard_reset --no-stub read_flash 0x9000 204800 nvsfactory.bin
+
+```