TBA: Create "Close all tabs" Notification
Some apps, like Focus and Signal, provide a notification in the notification drawer where the user can quickly do something (such as lock the app, clear all browsing history, etc). TBA should provide something similar to what Focus has. Focus' notification says "Erase browsing history". We may want a notification that says "Close App" or "Close All Tabs".
We can bikeshed on the wording.
Fennec does not currently have this functionality, but it shouldn't be too difficult to implement, and we can likely uplift it (for closing all private tabs).