[EGD-5794] Fix stack size overflow

There is not enough space in service cellular
stack which is causing debug problems.

[EGD-5028] Add batt critical level db

Battery critical level sotred in
database.

[EGD-5788] Fix json formatting in message endpoint responses

Responses had redundant anonymous objects which impeded parsing jsons.

[EGD-5697] Framework for phone modes introduced

It allows to transmit phone modes information to listening services.

[EGD-4394] Add BT device name change

Added handling of BT device name changing

[EGD-5586] Clean up messages endpoint API

Introducing changes according to new messages endpoint api
proposal doc. All request have been updated, and some new were added.
Harness tests were updated too. These changes will be followed up with
pagination implementation.

[EGD-4797] Battery bar as widget

Battery bar now is present as
a separate widget in top bar.
Additionally refactored passing
battery status.

[EGD-5541] Sim card check refactor

Moved checking for a SIM card logic from
application level to service cellular.
Provided an action in response to application messages.

[EGD-5726] Remove not working tests form build

Just to politely remind developer if they forget adding their tests.

[EGD-5597] Fix messages overflowing length

Current sms length is bound by 7*67 characters. This PR
enforce that limit on ApplicationMessages level.
Additionally PR solve:
 - corner case problem with invalid cursor position in TextBackup
 - EGD-4408 fix of label on desktop menuWindow

[EGD-2931] Fix private number incoming calls

The change adjusts both cellular service as well as
call and call log applications to handle properly
incoming calls from private numbers.

[EGD-5382] Add LowPower CpuSentinels

In order to synchronize the Low Power mode, the services were
immediately informed about the frequency change,
so that they can update their resources (e.g. PWM filling)
and services may request the maximum CPU frequency in order
to perform a task (e.g. screen redraw, telephone conversation)

[EGD-5577] Add charger temperature cutoff

Battery charger cutoff due in
selected temperature range. Proper
charged state detection for rt1051

[EGD-5319] Add test related to cold and hot start of cellular

Add harness test related to cold and hot start of cellular service

[EGD-5291] Fixes in Call App

Fix for Call ended window displayed to shortly
Separted the logic of two gui timers in call window.
Removed redundant main window in call app
Refactored CallWindow interface

[EGD-5398] Added onBoarding application first version

Created first version of onBoarding application. Added welcome
window, configuration start window and adopted language
window. Small Icon GUI refactor. AppManager language copy removed.

[EGD-5529] Added CLCC parser

New cmd mechanism implementation of CLCC parser.
Unit tests implementation for the parser.
Refactor of searching for active outgoing call
in service cellular.

[EGD-4068] Add Update Package Installation Mode

It is necessary that the PureOS update mechanism enters Update Package
Installation Mode (where most of the services are stopped)
when the PureOS update package gets downloaded into the phone.

[EGD-5666] Add BT off function

Turning BT off was impossible thus there was the need of fixing it
Updated harness test

[EGD-5483] Updated BT harness tests

Added harness test for BT scan in order to be able
to test regression