Adding Batch Download Feature for YouTube Playlists

[TickToTock]

describe the feature you'd like to see

I'm really enjoying using cobalt for downloading YouTube videos. However, I've noticed that currently it only supports downloading single videos. When dealing with a YouTube playlist, I have to manually click and download each video one by one, which is quite time-consuming. I was wondering if it would be possible to add a batch download function for YouTube playlists? This would greatly enhance the usability and efficiency of the tool. Thank you for your time and consideration Best regards

additional context

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