[EGD-6455] Fix modem AT command timeouts

Fix modem AT command timeouts and make sure they are at least
bigger than the ones defined in Quectel specs.

[EGD-6455] Fix for incomming text messages issue

There was no proper error handling.
Minor routine refactor

[EGD-6079] Moved at factory from header to cpp file

- data moved to std::initializer_list no issue warned with tools
- GCC tools do not warn issues with memory now

[EGD-4851] Add URC support in sleep mode

When URCs come from the network and GSM is in sleep mode,
we wake up the modem to properly handle the incoming data.

[EGD-5919] Fix logs from Service: Cellular, Fota

Remove misleading error message(change to debug/info).
Do not trace as error multiple retry. Minimize (to zero)
error logs on cold and hot start of the phone.

[EGD-5737] Merge master into experimental

Keep experimental up to date with changes from master

[EGD-5737] Merge master into experimental

Keep experimental up to date with changes from master

[EGD-5737] Merge master into experimental

Keep experimental up to date with changes from master

[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-5295] Fixes in Calllog app

Fixed some Calllog UI issues:
Fixed lack of calllog entry after call aborting

[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-5599] Change AT and DLC channels for big return

Change which allow to handle large return from
at commands both via UART and DLC-Commands

[EGD-4386] Add VoLTE on/off functionality

Modem setup so that VoLTE connection is possible,
as long as there is LTE coverage
and the operator allows it.

[EGD-5299] PR comments

Deleted commented-out digital filter calls. Moved QEEC to factory.
Added selection for echo cancellation strength.

[EGD-4990] Add UT for at+ccfc parser

It adds Unit tests for at+ccfc command parser.

[EGD-5045] Change call flow handling for lock screen

Call requests on lock screen have to be handled
separately to allow only emergency and ICE numbers.

[EGD-5298] Microphone Adjust

Changed parameters for mic GSM path to get clear voice

[EGD-5451] Added SMS Center SMSC check to OS

Extended cmd mechanism to provide class defined responses and
implemented SMS center verification to check if SIM card is properly
cofigured and is able to send SMS messagess at all.
This check is needed because if SMS Center is lost we are not able
to send SMS messages with no verbose error codes.
Added milliseconds and noexcept specifiers for at commands
Fixed Chanel name to Channel

[EGD-4861] Call waiting response parser

It allows to show proper GUI windows for call waiting MMI responses.

[EGD-4862] Add CLIP, CLIR etc responses parser

It allows to show proper GUI windows for CLIP,
 CLIR and IMEI MMI response