add boards waveshare-c6-touch-lcd-1.83 (#1575)

* Update CMakeLists.txt 

WAVESHARE_C6_TOUCH_LCD_1_83

* Update Kconfig.projbuild

WAVESHARE_C6_TOUCH_LCD_1_83

* Create README.md

waveshare-c6-touch-lcd-1.83

* Add files via upload

main/boards/waveshare-c6-touch-lcd-1.83/README.md

@@ -0,0 +1,49 @@
+
+# 产品链接
+微雪电子 ESP32-C6-Touch-LCD-1.83
+
+(https://www.waveshare.net/shop/ESP32-C6-Touch-LCD-1.83.htm)
+
+# 编译配置命令
+
+**克隆工程**
+
+```bash
+git clone https://github.com/78/xiaozhi-esp32.git
+```
+
+**进入工程**
+
+```bash
+cd xiaozhi-esp32
+```
+
+**配置编译目标为 ESP32C6**
+
+```bash
+idf.py set-target esp32c6
+```
+
+**打开 menuconfig**
+
+```bash
+idf.py menuconfig
+```
+
+**选择板子**
+
+```bash
+Xiaozhi Assistant -> Board Type -> Waveshare ESP32-C6-Touch-LCD-1.83
+```
+
+**编译**
+
+```ba
+idf.py build
+```
+
+**下载并打开串口终端**
+
+```bash
+idf.py build flash monitor
+```