[feat] update transport module and channel module

src/channel/data_channel_send.h

@@ -7,12 +7,27 @@
 #ifndef _DATA_CHANNEL_SEND_H_
 #define _DATA_CHANNEL_SEND_H_
 
+#include "ice_agent.h"
+#include "rtp_codec.h"
+#include "rtp_data_sender.h"
+
 class DataChannelSend {
  public:
   DataChannelSend();
+  DataChannelSend(std::shared_ptr<IceAgent> ice_agent,
+                  std::shared_ptr<IOStatistics> ice_io_statistics);
   ~DataChannelSend();
 
  public:
+  void Initialize(RtpPacket::PAYLOAD_TYPE payload_type);
+  void Destroy();
+  int SendData(const char *data, size_t size);
+
+ private:
+  std::shared_ptr<IceAgent> ice_agent_ = nullptr;
+  std::shared_ptr<IOStatistics> ice_io_statistics_ = nullptr;
+  std::unique_ptr<RtpCodec> data_rtp_codec_ = nullptr;
+  std::unique_ptr<RtpDataSender> rtp_data_sender_ = nullptr;
 };
 
 #endif