WIP: Support Uploading Additional Video Files

[zubeydecivelek]

Current Behavior:

• When a video file is uploaded as a complimentary (additional) file, it replaces the master file and triggers the workflow.

UI Changes:

• Separated the functionality for uploading additional files and replacing the master file.
• Updated the UI to reflect these distinct behaviors:
• Replacing the Master File: Continues to trigger the workflow as before.
• Uploading Additional Files: Behaves as expected, uploads the file as an additional file without triggering the workflow.

Future Work:

• Modify the context_type and tags of additional files because they're implemented as subtitles
• UI: Subtitle displaying it not correct
• UI: Improve the UI for uploading additional files and replacing the master file