Collab Videos feature

[artimanzero]

Describe the problem to be solved

On YouTube there's this new feature called YouTube collabs, and it lets you make collab videos basically you make a video with multiple people, and it will show all people as the channel that created the video and recommends the video to all the channels participating I would love this in peertube

Describe the solution you would like

Implement a feature that makes a video able to be marked as a collab video and feature multiple creators, and show that video to the followers of that channel