Changes: Krypton Open Source Project

* Merged March security patch (Sv2, 12L).

* Bump krypton version to 2.6
* Dropped brightness slider customisations, will be back.
* Dropped kdrag0n's monet impl, may or may not be back. So it's Google's impl for now.
* Dropped lawnchair and switched to aosp Launcher3.
* Dropped separate wifi / data tile (Internet tile ftw).
* Fixed a few issues with updater (installation halting on idle, auto update check notification for non-existent OTAs and such).
* Fixed udfps icon and hbm circle misalignment in biometric prompt.
* Fixed a sysui crash caused by concurrency issue while collecting bluetooth battery level.
* Fixed fake navbar sticking in some scenarios.
* Fixed bluetooth battery level not showing up when multiple devices are connected and only one or a few reports battery level.
* Updated translations.
* Update some prebuilt google apps

Merge tag 'android-12.1.0_r4' of https://android.googlesource.com/platform/manifest into default

tag 'android-12.1.0_r4' of https://android.googlesource.com/platform/manifest:
  Manifest for Android 12.1.0 Release 4
  Manifest for Android 12.1.0 Release 3
  Manifest for Android 12.1.0 Release 2
snippets: move KryptonSettings out of Settings