Add Support for IAMF/Eclipsa Audio

[CasperMcFadden95]

Checklist

• I made sure that there are no existing issues - open or closed - which I could contribute my information to.
• I have read the FAQ and my problem isn't listed.
• I'm aware that this is a request for NewPipe itself and that requests for adding a new service need to be made at NewPipeExtractor.
• I have taken the time to fill in all the required details. I understand that the feature request will be dismissed otherwise.
• This issue contains only one feature request.
• I have read and understood the contribution guidelines.

Feature description

YouTube is adding support for Spatial Audio using the IAMF/Eclipsa Audio codec (https://www.flatpanelshd.com/focus.php?subaction=showfull&id=1739336996) and it would be nice to play it if possible.

Thanks

Why do you want this feature?

Allows playing Spatial audio if a YouTube video has it

Additional information

The audio is format 773

yt-dlp -f 773 'https://www.youtube.com/watch?v=ItvQeAkpG-M'
yt-dlp -f 773 'https://www.youtube.com/watch?v=CD7n92qPuq4'

The downloaded m4a can be played with ffplay

https://www.flatpanelshd.com/pictures/eclipsaaudioces_2_large.jpg is of a different video but has debug info showing the codec id.