Support new notification type for Wrapstodon

[MagicLike]

Pitch

Similar to #4334 with the new feature "Wrapstodon" (not on stable yet) a new notification type got released which currently only shows as Unknown notification type in Tusky.

Motivation

As already described above it would actually show up correctly within Tusky and not as an error message

[connyduck]

I'm not sure if we will support this one. It is more of a gimmick than a real feature.

[MagicLike]

yeah and it is not even finished code-wise, just wanted to add an issue if it will be supported at some point and imo it is very low priority...