[MOS-939] Apply target update scripts

* Removed old UDM-related update scripts that are no longer needed.
* Applied target update script
* Removed unneeded data folder from user partition
* Removed dummy personalization.json

[BH-1639] Add welcome message with charging info

Add new bell welcome window
Add new close reasons
Add new actions
Bump assets version
Remove bold text from welcome message
Remove bold text from onboarding popups

[CP-1825] Update while on onboarding screen

Add a parameter to device info about onboarding state.
Update documentation for Pure and Harmony.

[CP-1836] Lack of error handling for audio playback

Added error handling for incorrect audio formats and corrupted files inside Relaxation app

[MOS-921] Fixed unexitable screen while having a missed call during template selection

Created a cloned SMS template window to differenciate it from the
templates used in SMS thred - better than creating a bool flag...

Added switchBack on missed call to application messages

[BH-1627] Enable brownout detection

There is the possibility of hanging
the MCU due to a power glitch
if the voltage drops to 2.8V
and the system wants to use some
peripherals like the eink or the backlight.

To prevent this situation brownout
detection has been enabled
which monitors the 1.1V and 2.5V
LDO regulators. If the voltage
will drop to the trigger voltages
then the interrupt is invoked.
The interrupt checks the source
of the interrupt and then reset
the MCU using WDOG_B pin
which is connected to the main power source.

After restarting, the MCU checks
the voltage. If it is too low
the system enters SNVS mode.

[BH-1640][BH-1645] Fix About and Factory Reset windows

In the french language, the software version was missing.
Now the About window is able to display even longer software versions.

Yes/No behavior in the Factory Reset window is
fixed. Earlier it worked in carousel mode.

[MOS-922] Add database migration docs

* Added database migration docs
* Updated database migration tool

[MOS-202] Add meditation parameters to non-volatile memory

The meditation parameters set by the user will be remembered.

style check fix

[MOS-905] Fix crash on power off with USB cable connected

Fix of the issue that turning off the phone and
clicking any keyboard button resulted in
crash and reboot.

[MOS-59] Change tethering text to icon in status bar

Changed text to icon, fixed behaviour with phone modes

[MOS-237] Removed unnecessary workaround for system reboot

Removed workaround for rebooting into recovery (update)

[CP-1624] Adding numberID as a field to contact and message response

Changing the way Center is recognizing the threads in the message
window by introducing the numberID

[BH-1609] Fix resizing of format in TimeSetFmtSpinner

Change the resizing logic of the children of TimeSetFmtSpinner.
Remove arguments of TimeSetFmtSpinner and BellStatusClock ctors.

[BH-1582] Fix alarm edit inactivity handling

Add missing timer start in entry event handler

[CP-1419] Signal range in Pure status without SIM card inserted

Fix for incorrect signal strength displayed in Center when network
status is NotRegistered.

[MOS-776] Deletion of outdated and invalid SettingsApi test

Deletion of outdated and invalid SettingsApi test. New test are planed.

[MOS-000] Rebase fixes

Rebase fixes

[MOS-875] Fixed rebase issues

Fixed

[MOS-856] Another approach to MTP path in DeviceInfo

This time it's device-agnostic from purefs paths