https://linear.app/comm/issue/ENG-10314/migrate-comm-app-to-use-new-media-module
- got rid of ffmpeg dependency
- renamed `ffmpeg.js` to `mediaProcessingQueue.js` because the main feature of this file is the queue and wrapping functions from the media module
- reanamed `FFmpegStatistics` and `video_ffmpeg_transcode` step
Depends on D14480