[BH-1696] Notification when connect the device to the charger

Adding notifications when charger is connected

[MOS-498] Change input language with the change of the system language

Now when the user changes the system language, the input/keyboard language
will change automatically (in the background).
If the user changes the input/keyboard language, this will not change
the system language.

[MOS-644] Displaying number entered on the keypad during a call

Now, on the active call screen, the user can see the numbers provided during the call,
which is useful when, for example, the user calls a call center.

[MOS-1042] Fixed inability to save a contact that did not previously have a phone number

Fixed inability to save a contact without a phone number
when contact lose the number after replace similar number and
visibility of the SAVE button when editing/creating a contact.

[BH-1688] Create a standard for logs

* Adding document describing how to use logger
* Adjusting logs to follow a new guide
* Change order in log header:
  line number is now before function name

[MOS-1048] Fix not fitting VoLTE button label

Fix of the issue that VoLTE checking
state label was cut off due to
improper setMinimumWidthToFitText()
method behavior when text is placed
in box with rounded corners.

[MOS-1047] Fix calling abort() in EnterNumberWindow

* Removed call to abort() method in case
EnterNumberWindow's SwitchData handler
receives message that can't be handled,
what caused the phone to crash.
* Unify ApplicationCall window names
definitions.
* Code cleanup.

[MOS-669] Add too hot battery notification when charging

* Added notification showing on the main
screen if the battery has reached too
high temperature to continue charging.
* Code cleanups.

[MOS-1044] Fix duplicating phone number in messages app

* Fix of the issue that locking phone on
new message window would cause phone
number field contents to duplicate.
* Minor cleanups.

Revert "[MOS-195] Phone number input style unification"

This reverts commit 1c18ac422b0f5f21de408a66610c1ac6bb15258e.

[MOS-1033] Add 'beta' label to VoLTE switch for selected countries

Added mechanism enabling to individually show
or hide "beta" label on VoLTE switch for each
country.

[MOS-1035] Fixes in new alarm window UI flow

* Fixed disappearing left functional
button label when popup appeared while
focused on sound selection field or
AM/PM field
* Fixed erasing selections on
custom alarm edit window when
popup appeared.
* Added preview playback stopping
after manually blocking the phone.

[MOS-195] Phone number input style unification

Unification of input style for phone number. Now every time when the user will provide
a phone number in gui the right function key (RF key) will be work as CLEAR.
This means that if any number is in the phone number field, the RF key will remove
the last character. Otherwise it'll work as typical BACK button.
This changes also provide ability to add * and # sign to number.

[MOS-1037] Fix disappearing 'Call' label in phonebook

Fix of the issue that 'Call' label would
disappear or show as 'Options' label
when switching through the windows in
particular scenarios.
Additionally fixed possibility to
call to contact when selecting it
via messages app by pressing
unlabeled left functional.

[MOS-1032] Fix double return to previous window in onboarding

Fix of the regression created by previous
commit - saving manually set time resulted
in switching two windows back instead of
just one when done in onboarding.

[MOS-1036] Fix song time not updated when returning from list

* Fix of the issue that switching from songs
list to main view after playing and stopping
some track resulted in elapsed time counter
not being updated until the song is unpaused;
* cleanups.

[MOS-948] Fix for tethering popup was losing user unsaved data

Fixed data loss when creating or editing a note/contact after connecting
the USB cable and selecting the option to enable tetering in the popup window
that appears. Now, when the user wants to enable tethering, they will be asked
if they want to exit without saving.

[MOS-1011] Fix frequency switching stability

Multiple fixes of clock switching related
stability issues:
* added RC oscillator hysteresis as in NXP example;
* changed DCDC converter config;
* configure PLL2 to be able to run on any CPU
frequency level;
* added switching to 1.275V (overdrive) voltage
when applying any clock change above 12MHz as
well as LDO or bandgap switching, as done in
Mbed OS' lpm.c for RT1050;
* changed BMCR AXI queues weighs for SDRAM
in JLink scripts to disable operations
reordering, as it is known to cause data
integrity issues;
* extracted some code to separate files;
* smaller or bigger code cleanups.

[MOS-1032] Fix misleading 'Save' button behavior when setting time

Fix of the issue that pressing 'Save' when setting
time would set the time indeed, but the UI would
not return to previous window, what might look
as if saving failed.

[MOS-1030] Fix for losing drafted message and recipient number in new message windows

Fixed a scenario where a user left a draft message with the recipient's phone number
in the new message window, and when they wanted to go back to that message,
the phone number and message could disappear.