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

proto/device_comm.proto

@@ -27,6 +27,24 @@ message FunctionKeyEvent {
   KeyAction action = 2;
 }
 
+message LedState {
+  uint32 led_mask = 1;
+}
+
+message TimeSync {
+  uint32 version = 1;
+  uint32 flags = 2;
+  sint32 timezone_min = 3;
+  fixed64 utc_ms = 4;
+  fixed32 accuracy_ms = 5;
+}
+
+message ThemeRgb {
+  uint32 red = 1;
+  uint32 green = 2;
+  uint32 blue = 3;
+}
+
 message Ack {
   uint32 acked_type = 1;
 }
@@ -50,7 +68,10 @@ message CdcPacketBody {
     HelloRsp hello_rsp = 2;
     Bitmap bitmap = 3;
     FunctionKeyEvent function_key_event = 4;
-    Ack ack = 5;
-    Error error = 6;
+    LedState led_state = 5;
+    TimeSync time_sync = 6;
+    ThemeRgb theme_rgb = 7;
+    Ack ack = 8;
+    Error error = 9;
   }
 }