[feat] use packet sender to send all rtp packets

src/transport/channel/audio_channel_send.h

@@ -8,6 +8,7 @@
 #define _AUDIO_CHANNEL_SEND_H_
 
 #include "ice_agent.h"
+#include "packet_sender.h"
 #include "rtp_audio_sender.h"
 #include "rtp_packetizer.h"
 
@@ -15,6 +16,7 @@ class AudioChannelSend {
  public:
   AudioChannelSend();
   AudioChannelSend(std::shared_ptr<IceAgent> ice_agent,
+                   std::shared_ptr<PacketSender> packet_sender,
                    std::shared_ptr<IOStatistics> ice_io_statistics);
   ~AudioChannelSend();
 
@@ -34,6 +36,7 @@ class AudioChannelSend {
   void OnReceiverReport(const ReceiverReport& receiver_report) {}
 
  private:
+  std::shared_ptr<PacketSender> packet_sender_ = nullptr;
   std::shared_ptr<IceAgent> ice_agent_ = nullptr;
   std::shared_ptr<IOStatistics> ice_io_statistics_ = nullptr;
   std::unique_ptr<RtpPacketizer> rtp_packetizer_ = nullptr;