## CHANGES
- Extract shared yt-dlp logic into tryMethodYtDlpInternal helper
- Add processVTTFileFunc parameter for flexible VTT processing
- Implement language matching for 2-char language codes
- Refactor tryMethodYtDlp to use new helper function
- Refactor tryMethodYtDlpWithTimestamps to use helper
- Reduce code duplication between transcript methods
- Maintain existing functionality with cleaner structure
## CHANGES
- Replace hardcoded `/tmp` with `os.TempDir()` for paths
- Use `filepath.Join()` instead of string concatenation
- Remove Unix `find` command dependency completely
- Add new `findVTTFiles()` method using `filepath.Walk()`
- Make VTT file discovery work on Windows
- Improve error handling for file operations
- Maintain backward compatibility with existing functionality
This commit adds the ability to grab the transcript
of a YouTube video with timestamps. The timestamps
are formatted as HH:MM:SS and are prepended to
each line of the transcript. The feature is enabled
by the new `--transcript-with-timestamps` flag,
so it's similar to the existing `--transcript` flag.
Example future use-case:
Providing summary of a video that includes timestamps
for quick navigation to specific parts of the video.
