File _aggregate of Package ffnvcodec

<aggregatelist>
  <aggregate project="multimedia:libs">
    <package>ffnvcodec</package>
    <repository target="openSUSE_Leap_15.6" source="15.6" />
    <repository target="openSUSE_Leap_16.0" source="16.0" />
  </aggregate>
</aggregatelist>