[BH-776] Implemented PreWakeUp unit tests

Unit tests added for the PreWakeUp basic implementation.

[EGD-7445] Removed dead scripts

Removed dead scripts

[BH-860] Decouple charger driver from system

Remove system dependency from charger driver implementation. Remove
circular, lambda driven dependency between charger and brownout
detector. Remove event manager dependency in driver as well.
Encapsulate some of charger logic in introduced battery controller.

Extract path configuration to the separate target to decouple charger
from vfs middleware.

Signed-off-by: Marcin Smoczyński <smoczynski.marcin@gmail.com>

[EGD-7481] Add user heap stats to puregdb

In the puregdb debugging script we have data about the system
heap and we need data about the user heap.

[EGD-878] Add Background Sounds basic app structure

The following commit provides an implementation of basic
Background Sounds application structure that will serve
as base for futher developement

[BH-703] Base Bell OnBoarding application

Added base Bell OnBoarding application. Bell list
options refactor.Language selection, setting and
finalize windows.

[BH-876] Refactor SnoozeSettings using generic approach

In order to use settings models in other
settings windows generic approach could be implemented.

[BH-820] Bell layout and font update

Updated Bell baseLayout and biggest used font.

[EGD-7569] Add Alarm snooze list notification

Notification added to notifications model

[BH-873] Activate alarm in backend on Alarm activation

Activate alarm in backend on Alarm activation

[EGD-7583] Merge stable into master branch

Merge stable into master branch - manual part.

[CP-583] Update failure due to version.json on the phone

Added version.json to the image

(cherry picked from commit 395e99e16239630263d5892e2462f1333236ae99)

[EGD-7391] Fix random crash on idle

Add atomic primitives for fix
random crash on idle mode

Signed-off-by: Lucjan Bryndza <lucjan.bryndza@mudita.com>
(cherry picked from commit 7b75494ba59d6490f72284308ceb9d5850990368)

[EGD-7486] Increase stack sizes

Increase stack sizes of the eink service and the system watchdog. During
stability tests stack-overflows were observed for both threads.

Signed-off-by: Marcin Smoczyński <smoczynski.marcin@gmail.com>
(cherry picked from commit f9a23a7b58513a43dbec009277bc7106c2c92cd5)

[EGD-7466] Offline mode defaults changed

Flight mode is not the default offline mode.

(cherry picked from commit d49c8ddbf8c64b635d56379281d913206f046500)

[EGD-7484] Increase CPU frequency for screen redraw

Increasing CPU frequency for screen redraw when screen is locked
due to DMA problems at lower frequencies.

(cherry picked from commit ddc80d3ed502d91c7d6f5ee4953d2771d93fa5ef)

[BH-776] Pre-wakeup handling skeleton

First draft of pre-wakeup handling mechanism.

[EGD-776] Bell-specific AlarmOperations

We need a separate alarm operations for the Bell.
This is the first step of pre-wake up implementation.

[EGD-7501] Rrules presenter added

- handles most of our rrule manipulation needs for alarm
- unittests for transformations

[BH-593] Use correct time format in alarm setting

Use correct time format in alarm setting
Move TimeModel to common