[EGD-4121] UCS2 32 bit support (#897)

[EGD-2975] Added Network Access Technology support

[EGD-4070] Messages listView sync db queries refactored to full async. (#837)

[EGD-4134] New application manager proposal documentation. (#882)

[EGD-4051] Based application manager app switching on application stack. (#858)

* [EGD-4051] Based application manager app switching on application stack.

* [EGD-4051] Application manager thorough refactor.

[EGD-4123] SwitchToNotification added to ApplicationManager (#879)

* [EGD-4123] Implemented notifications based on application manager actions.

Co-authored-by: marek303 <marek303@poczta.onet.pl>
Co-authored-by: Piotr Tański <piotr.tanski@mudita.com>

[EGD-3045] Magnetometer driver (#788)

* [EGD-3045] magnetometer driver - timer polling approach
- magneto pin mux
- magneto reg structs
- magneto irq skeleton
- bluetooth irq handler moved
- dedicated i2c methods
- bitfields parsed and populated explicitly
* [misc] big endian ↔ long conversion in Utils + UT

[EGD-4118] Audio doxy cleanup (#856)

[EGD-4075] Use FATFS in the Linux builds (#843)

* [EGD-4075] Use FAT fs in the emulator

Add script for genrate base phone image

* [EGD-4075] Use FreeRTOS-FAT in emulator initial commit

* [EGD-4075] Thread local storage fix

Fixing thread local storage when running on the
Linux platform in the test mode

* [EGD-4075] Improve image generation

Improve image generation script on the linux platform

* [EGD-4075] Fix all test with FAT fs image

Fix all tests with fatfs image

* [EGD-4075] Fix calculator utility test

* [EGD-4075] Image dependencies fix

* Remove uneeded comments

* Missing headers in CR

* [EGD-4075] Fixed whitespaces

Co-authored-by: Lucjan Bryndza <lucjan.bryndza@mudita.com>

[EGD-4011] added BT audio device with A2DP playback (#870)

Co-authored-by: SP2FET <bartosz.cichocki@mudita.com>

[EGD-4057] Create sql script for file indexer DB schema (#869)

[EGD-4120] Cellular - new line at the end of the command (#877)

[EGD-3852] Add missing virtual destructor (#876)

[EGD-4099] BT set stream (#846)

[EGD-3743] Removed old doxygen copyright statements from project.

[EGD-3743] Update copyrights in fies

[EGD-4128] Fix - routing does not start (#866)

[EGD-4125] Cumulative set of minor fixes for audio (#861)

* fixed choice of input for recording
* fixed vibration setting getter
* fixed response messages from a HandleStop
* improved style of using AudioMux APIs

[EGD-4038] handling incoming calls and sms in sleep mode (#819)

[EGD-4076] Headphones auto detect fix