Single Word Subtitles Using WhisperX And FFmpeg

We generate an SRT file from a video with word level highlights using WhisperX and burn it into the video using FFmpeg. - [WhisperX](https://github.com/m-bain/whisperX/) - [ASS File Format Specification](http://www.tcax.org/docs/ass-specs.htm) - [Kapwing Subtitles](https://www.kapwing.com/subtitles/add-subtitles)