[EGD-5554] Change MTP supported file types

Defined supported file types for MTP:
- MP3, WAV, FLAC

[EGD-5299] PR comments

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

[EGD-5665] Switch CI to ninja

Ninja is faster - switching to ninja.
Sparse files support when building artefacts.

[EGD-5613] Fix pin lock window

Minor fixes in pin lock window caused by gcc10 asan leak detection.

[EGD-5615] Fix message not sent warning

Because of to short operation timeout, messages was
marked as not sent despite being received properly.

[EGD-5042] Fix options distances in SMS and Settings options

According to most recent design, options should be separated
with 8px.

[EGD-5322] Add send message test (long sms, special characters)

Add send message test (long sms, special characters)

[EGD-5322] Add send message test (long sms, special characters)

Add send message test (long sms, special characters)

[EGD-4763] Update tests add missing corner cases

Some tests where not added during the initial setup,
and there where few more corner cases that need to fixed
like line wrapping by `catch2 -l` and need of escaping
some characters [],

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

It adds Unit tests for at+ccfc command parser.

[EGD-5664] Fix excessive logging in USB-CDC

Remove excessive logging in USB-CDC, which slows down transfer

[EGD-5158] Change access to the bus methods

The bus is now accessible only via Service object.

[EGD-5575] Add battery file test

Battery file existence test for
harness test suit. Minor changes to
file saving applied.

[EGD-5625] Optimize the binary size of the SML state machine

The debug firmware couldn't be built because of its size.

[EGD-5592] Fix [Messages EP] PhoneNumber field is not set

Remove phoneNumber from PurePhone FW and Message EP documentation.
MC must associate the ContactID field with the contact number basing on
ContactEP interface.

[EGD-5638] Use ignore_paths in formatting script hook mode

When used as a pre-commit hook, the formatting script should ignore
paths and files the same way as in standalone mode.

[EGD-5619] Add unified implementation of active icons

This PR provides unified and reusable implementation of active
icons used in windows system-wide.

[EGD-4115] Implement FreeRTOS configASSERT macro

The configASSERT() macro was modified to use assert instead of
an infinite loop.

[EGD-5637] Add RichText returning unhandled nullptr

Added check for unhandled nullptr that causes crashes.

[EGD-5620] Increase configTOTAL_HEAP_SIZE for linux

configTOTAL_HEAP_SIZE was set too small for linux build

[EGD-4763] Add documentation on how to add unit tests

Short document about how to add, enable and disable unit test.