feat(protocol): 添加时间同步和主题颜色协议支持

- 添加CDC_PROTO_TYPE_LED_STATE、CDC_PROTO_TYPE_TIME_SYNC和
  CDC_PROTO_TYPE_THEME_RGB协议类型定义
- 在protobuf中定义LedState、TimeSync和ThemeRgb消息结构
- 更新CdcPacketBody消息以包含新的协议类型
- 增加协议能力标志位以支持新功能

src/events/datetime_event.c

@@ -0,0 +1,27 @@
+#include "datetime_event.h"
+
+static void log_datetime_event(const struct app_event_header *aeh)
+{
+	const struct datetime_event *event = cast_datetime_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh, "date:%s time:%s",
+			      event->date_text, event->time_text);
+}
+
+static void profile_datetime_event(struct log_event_buf *buf,
+				   const struct app_event_header *aeh)
+{
+	ARG_UNUSED(buf);
+	ARG_UNUSED(aeh);
+}
+
+APP_EVENT_INFO_DEFINE(datetime_event,
+		      ENCODE(),
+		      ENCODE(),
+		      profile_datetime_event);
+
+APP_EVENT_TYPE_DEFINE(datetime_event,
+		      log_datetime_event,
+		      &datetime_event_info,
+		      APP_EVENT_FLAGS_CREATE(
+			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));