Very early dev work, more changes will be active in this branch.
- Implement download queue management and worker system
- Add OpenAPI/Swagger documentation
- Include download progress tracking and status endpoints
- Add API authentication and error handling
- Update core components to support API integration
- Add intelligent embedded audio language detection at mux stage
- Automatically set audio language metadata when no separate audio tracks exist
- Respect user flags (-V, --no-audio) to avoid unnecessary processing
- Smart video track selection based on title language with fallbacks
- Improved default track selection to prioritize title language matches
- Enhanced FFmpeg repackaging with audio stream metadata injection
- Works automatically for all services without service-specific code
* Introduced `MKVToolNix` and `mkvpropedit` binaries to the project.
* Updated the environment check to include required status for dependencies.
* Enhanced the `Tracks` class to raise an error if `MKVToolNix` is not found.
* Modified the `_apply_tags` function to utilize the `mkvpropedit` binary from the binaries module.
