Plays srt subtitles over specified ros2 topic.
Default topic is /chatter
Clone, build and run with an srt file of your choice
ros2 run rickbot rickbotmain ~/Downloads/Rick-Astley-Never-Gonna-Give-You-Up.srt
Timestamp: 00:00:18.800000, index: 0, subtitle: We're no strangers to love
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