TiRTC FFmpeg corresponding source and static relink materials

The complete version-bound compliance sidecar for this SDK contains:
  source/ffmpeg-source.tar.gz
  source/rebuild_ffmpeg.py
  relink/<platform>/<runtime-output>/

Source archive SHA-256: 9006e67d9fb80ab3ee7c2c4e3122b7c9f3df21a6592ed969edc1a91fa4bfd08d
Obtain the sidecar with the same SDK version and compliance-manifest hash from the TiRTC SDK delivery channel used for this binary.
