Revamp OCI Subtitle Translation: Fix API Calls, Add Local/Storage Support, and Modularize Workflow

[kklike32]

This PR updates the oci-subtitle-translation sub-repo to correct translation API usage and streamline the workflow.

Highlights

• Fixed incorrect OCI Language API calls for subtitle translation
• Added support for both local and Object Storage audio/SRT files
• Modularized transcription, translation, and workflow logic
• Improved logging and error handling for easier debugging
• Updated README with new usage examples and troubleshooting

Validation

1. Configure config.yaml with OCI details

2. Run:

   python workflow.py --audio-source audio.mp3 --target-language es
   python workflow.py --audio-source "recordings/meeting.wav" --target-languages es fr de

3. Verify output SRT files locally or in Object Storage

Notes

• No associated issue; fixes broken functionality in the sub-repo
• All commits signed off under the OCA

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