AVRCP中控制音乐播放及暂停部分

 Support Levels of operation_id in TG:

operation_id  Category 1: Player/Recorder   Category 2:Monitor/Amplifier  Category 3: Tuner  Category 4: Menu
  play                                             C1                                            X                                              X                             X 
  stop                                             C1                                            X                                              X                             X
  pause                                          O                                              X                                              X                             X

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