Allow Queuing up Multiple Downloads at Once

[hudsonm62]

Checklist

• [ ] This feature I'm requesting is already implemented in yt-dlp.
• [ ] This feature is merely a UI/UX update.
• [x] This feature is suitable for primary users with little knowledge about yt-dlp.
• [ ] This feature is available for most websites, not only the video platform I use.
• [x] This feature is suitable for a large variety of videos.
• [x] This feature is not going to conflict with many of the existing options.

Is your feature request related to a problem? Please describe.

No response

Describe the solution you'd like

Let us queue up multiple downloads at a time

Video link

No response

Additional context

If you try to queue up another download, whilst one is already running, you get an error complaining something is already being downloaded

[error-reporting]

Latest alpha allows for this

[HighPriest]

@error-reporting Which one? I don't have queues on the latest version.