RFC Uploading video files as additional files

Current Behavior
When video files uploaded as a complimentary file, the first video file replaces the master video and starts the workflow, which includes video metadata extraction, frame extraction, and transcoding.

Changes

• Added separate interfaces for:

  • Uploading additional files.
  • Replacing the master file.
    

• Separated the replace master file behavior into its own function and refactored add_files to handle additional files without triggering the workflow.

Future Work

• Modify the context_type and tags of additional files because they're implemented as subtitles and vtt

{
"content_type": "mp4",
"context_type": "subtitle",
"key": "complimentary_video.mp4",
"tags": {
"content_type": "vtt"
}
}

• UI: Subtitle displaying it not correct
  

• UI: Improve the UI for uploading additional files and replacing the master file