[MOS-807] Unpacking update package

* Added unpacking and validating of
update package
* Removed 'utils-bootconfig'
* Added 'tar' module
* Minor compilation issues fixed

[CP-1734] Create factory reset reboot UI

Create window that will be shown when the
device turns off first time after factory
reset request made from PureOS.

[MOS-783] Fix crash on entering SAR menu

Fix of the issue that entering SAR option
in menu resulted in crash of the phone
due to uncaught exception caused by
invalid path provided.

[MOS-783] Moved battery config file to '/user/data'

Moved battery config file from root
directory of user partition to
'data' directory to comply with
new directory layout design.

[MOS-783] Working Pure simulator after partition changes

Fixed iosyscalls so that Pure simulator
works after directory structure changes.

[MOS-786] Added support for A/B boot codes in OS

Further implementation of A/B booting

[MOS-786] Added A/B booting support in OS

Added basic support for A/B booting

[MOS-783] First part of new dir structure implementation

    Works:
    - generating .img for Pure;
    - Pure boots after flashing new image and
    seems to be working fine;

    Not yet:
    - generating update package;
    - generating image for Harmony;
    - simulator;
    - path-related unit tests fail
    due to paths being hardcoded
    in test scenarios.

[MOS-000] Rebase fixes

Rebase fixes

[MOS-694] Move DB initialization from OS to build scripts

* Switched to DB initialization at compile time
* Organized and cleaned up db files directories(not finished completely)
* Fixed DB related unit tests
* Minor improvements to CMake
* Small fixes for GCC12 build

[CP-1560] New user directory structure

* New user directory implemented.
* Generate user directory structure at compile
time instead of at runtime(Pure/Harmony).
* Changed MTP root path to /storage
* FileIndexer: Minor refactor
* FileIndexer: Fixed handling incorrect/non-existing
scan directories.
* Updated Repository module to correctly handle
many assets paths.
* MultimediaDB: Minor unit tests refactor and fixed
some issues when using simulator.
* MultimediaDB: Added new queries and unit tests
* Harmony/Relaxation: Updated to correctly
use audio assets from more than one source.
* Harmony/Relaxation: Updated model and list items
provider.
* Harmony/Relaxation: Fixed stack overflow in audio service

[MOS-496] Music player broken UI

Fixed issues when selecting track index higher than 31.

[MOS-829] Fix the Pure's alarm plays indefinitely

According to the requirements the alarm after.
30 minutes of playing will be stopped
instead of snoozed.

[MOS-814] Fix no sound after BT device connection during call

Fix of the issue that connecting or
disconnecting BT device while call
was in progress resulted in no sound
being heard anywhere due to audio
routing being stopped when HFP device
disconnected.

Additionally minor code cleanup.

[MOS-838] Unable to unlock SIM card (corner case)

Fixed with adding a missing internal state reset on SIM
connection failure.

[CP-1575] Fix unwanted Center passcode prompt

Fixed unwanted Mudita Center passcode prompt after long press '#'
while dialing

[MOS-863] Fix phonebook crash when adding country prefix

Fix of the issue that editing existing contact's
number by adding country prefix resulted in
PureOS crash due to application stack overflow.
Additionally moved misplaced changelog entry.

[MOS-495] Fix deleting message content when changing phone mode

Fix of the issue that moving mode slider on new message
window caused the content of the message to be deleted.

[MOS-558] Fix wrong nav. bar state after exit from custom repeat window

The additional navigation bar restore has been added
to have proper state after exit from custom repeat window.
The restoration of the repeat option spinner labels has been added
after uncheck of all options.

[MOS-27] Fix invisible message text after pasting

Fix of the issue that pasting previously copied
text in new message field on thread screen
resulted in text shown in gray and invisibility
of each subsequently entered character.

Further analysis of this issue shown two
additional bugs in this place in code,
as a result a decision to completely
remove 'Reply' prompt text has been
made. Extended description of these
issues can be found in comment under
MOS-27 Jira ticket.