tone-player: Adds new tone playback APIs

tone-player: Adds new tone playback APIs

These new APIs will be used by capi-media-tone-player.

  server          : org.pulseaudio.Server
  object path     : /org/pulseaudio/TonePlayer
  interface       : org.pulseaudio.TonePlayer

  method name     : TonePlay
  method argument : [in] unsigned int for tone index
                    [in] signed int for duration
                    [in] signed int for client pid
                    [in] string for role
                    [in] signed int for parent id
                    [out] unsigned int for stream index
  return value    : None

  method name     : ToneStop
  method argument : [in] unsigned int for stream index
  return value    : None

[Version] 13.0.15
[Issue Type] Improvement

Change-Id: I090e917e26697250bb187b0d2df8cd6042875354
Signed-off-by: Jaechul Lee <jcsing.lee@samsung.com>