GYU: Account Notification Settings (#11008)

* Implement new notification settings UI

* Sort new keywords at the front

* Make ts-strict happier

* Make ts-strict happier

* chore: fixed lint issues

* update beta card

* Fix issue with the user settings test

* chore: fixed lint issues

* Add tests for notification settings

* chore: fixed lint issues

* fix: spurious text failures

* improve tests further

* make ts-strict happier

* improve tests further

* Reduce uncovered conditions

* Correct snapshot

* even more test coverage

* Fix an issue with inverted rules

* Update res/css/views/settings/tabs/_SettingsIndent.pcss

Co-authored-by: Šimon Brandner <simon.bra.ag@gmail.com>

* Fix license headers

* Improve i18n

* make linters happier

* Improve beta labels

* improve i18n

* chore: fixed lint issues

* fix: more lint issues

* Update snapshots to match changed text

* Update text as requested

* Remove labs image

* Update snapshots

* Correct an issue with one of the tests

* fix: keyword reconcilation code

* Determine mute status more accurately

* Address review comments

* Prevent duplicate updates

* Fix missing license header

* slight change to avoid ts-strict complaining

* fix test issue caused by previous merge

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Co-authored-by: Šimon Brandner <simon.bra.ag@gmail.com>

res/img/element-icons/new-and-improved.svg

@@ -0,0 +1,4 @@
+<svg viewBox="0 0 24 24" width="24" height="24" xmlns="http://www.w3.org/2000/svg">
+    <path fill="#0dbd8b" fill-opacity="0.1" d="m 24,12 a 12,12 0 0 1 -12,12 12,12 0 0 1 -12,-12 12,12 0 0 1 12,-12 12,12 0 0 1 12,12 z" />
+    <path fill="#0dbd8b" d="m 20,12 a 8,8 0 0 1 -8,8 8,8 0 0 1 -8,-8 8,8 0 0 1 8,-8 8,8 0 0 1 8,8 z" />
+</svg>