Allow Quote-Posting of PeerTube videos

### Describe the problem to be solved

Mastodon's recent [blog post](https://blog.joinmastodon.org/2025/09/introducing-quote-posts/) talks about their recent work on a [technical specification for the Fediverse that allows for consent-respecting quote posts](https://codeberg.org/fediverse/fep/src/branch/main/fep/044f/fep-044f.md).

A lot of engagement with PeerTube comes from other Fediverse platforms such as Mastodon, and allowing PeerTube videos to be quoted across such Fedi platforms would increase visibility and engagement.

### Describe the solution you would like

I would like PeerTube to implement this technical specification to at least the degree that would allow for the quote-posting of videos objects federated to Mastodon.