feat(board): 添加显示屏和PWM背光支持

- 在CMakeLists.txt中添加display_test_module.c源文件
- 在设备树配置中添加SPI3和PWM0引脚控制定义
- 配置MIPI DBI显示屏驱动，支持ST7789V控制器
- 添加PWM LED背光控制功能
- 启用GPIO复位功能并添加点击检测器配置
- 实现显示测试模块，支持彩色测试图案渲染

inc/click_detector_def.h

@@ -0,0 +1,15 @@
+/*
+ * This configuration file is included only once from the CAF click detector
+ * module and defines the keys that should produce click events.
+ */
+
+#include <caf/click_detector.h>
+
+const struct {} click_detector_def_include_once;
+
+static const struct click_detector_config click_detector_config[] = {
+	{
+		.key_id = 0x180,
+		.consume_button_event = true,
+	},
+};