feat: add aria2

[oElberte]

No description provided.

[SanujaNS]

This is interesting. Is this working?

[oElberte]

This is interesting. Is this working?

Yes, I just can’t guarantee with docker and kubernetes, but I’ve added aria2 in the apk.txt so they can use. I went from 500KB/s to 10MB/s.
But even if doesn’t work, yt-dlp just ignores aria2 and downloads normally.

[BennyThink]

This seems like a know issue from yt-dlp yt-dlp/yt-dlp#6369

I tried daily build, and it's back to normal. Can you add an environment to control this behavior, i.e.

if os.getenv("ENABLE_ARIA2"):
    ydl_opts.update(
        external_downloader="aria2c",
        external_downloader_args=[....]
    )