Add VideoDownloaderBot and LinkDownloaderBotForGroups:
- VideoDownloaderBot: interactive Telegram workflow for video/document/MP3 delivery.
- LinkDownloaderBotForGroups: automatic group-workflow converting shared links to native videos.
Difference: one is private-chat interactive, the other is group automation.
Add VideoDownloaderBot and LinkDownloaderBotForGroups:
Difference: one is private-chat interactive, the other is group automation.