[Request] Add support for playing media (ie audio files)

[Frigg Ratatoskr Mánibranðr]

See : https://awoo.space/users/FreyaManibrandr/statuses/103519395487681147

This is what it looks like in Hyperspace :

What it looks like is that it still thinks that it's an image/gallery, but because there's no image data, it just displays the controls for navigating the gallery, but no image.

[Marquis Kurt]

We currently have this already implemented in the beta versions of Hyperspace v1.1.0 and should make its way to the stable release in a few months (#121).

You can try the beta online here: https://hyperspaceapp-next.herokuapp.com