Separate notifications for mentions?

[edent]

Pitch

I'd like separate tabs for notifications and mentions.

For example, Tab 1 to contain new followers, reposts, favourites, etc. Tab 2 to contain @ mentions.

This is a feature that Fedilab has. Separate tabs for different notification types:

Motivation

While grouped notifications (#4715) is useful - it can be hard to see mentions in amongst all the other notifications.

One solution would be to allow users to add multiple notification tabs. That way they could set separate filters on each tab.