- Add subtitle below the toolbar title to indicate the state of the filter
- Add settings icon to take user to the notification settings page, and
thus make that more discoverable
Testing
-------
PASS
Device: iPhone 13 mini
iOS: 17.6.1
Coverage:
1. Switching back and forth between the notifications tab and other tabs
causes subtitle to show/hide as expected in both filter options
(all, friends)
2. Subtitle follows the friends filter
3. Subtitle shows after restarting the app
4. Settings icon appears and takes user to the notification setting view
5. Notification settings can be updated from that view.
Changelog-Changed: Improve notification view filtering UX
Closes: https://github.com/damus-io/damus/issues/2480
Signed-off-by: Daniel D’Aquino <daniel@daquino.me>