[EGD-5706] Refactor creating audio device

Audio devices are created in the audio subsystem and it is not possible
to send a device to bt service upon creation.

Introduce hookable audio device factory to allow sharing bluetooth
audio device. Move audio devices from bsp to audio allowing removal of
unwanted bsp -> audio dependency.

Remove Bluetooth proxy device which turned out to be a dead end.

Signed-off-by: Marcin Smoczyński <smoczynski.marcin@gmail.com>

[EGD-4394] Add BT device name change

Added handling of BT device name changing

[EGD-5666] Add BT off function

Turning BT off was impossible thus there was the need of fixing it
Updated harness test

[EGD-5483] Updated BT harness tests

Added harness test for BT scan in order to be able
to test regression

[EGD-5027] Services synchronization introduced

Dependencies between services are now supported.

[EGD-5158] Change access to the bus methods

The bus is now accessible only via Service object.

[EGD-5472] Bluetooth worker state machine

State machine POC implemented using SML library.

[EGD-5457] Add harness test for bluetooth on/off

There is no functional tests related to the Bluetooth. As the
refactor is on the way,we need to have a tool to check if it works
By the way fixed worker deinit

[EGD-5316] Add Bluetooth run loop integration into worker

To be able to handle properly the Bluetooth stack we need to
get rid of doubled FreeRTOS task and do refactor of
the whole BT section. This is first part of refactor and it
includes integrating run loop into our worker and unifying
namespaces

Merge branch 'master' into stable

[EGD-4580] Add BT settings middleware

Added bluetooth settings middleware to store BT status in settings.
Added middleware layer to handle new settings queries.

[EGD-5133] Fix settings bus add duplications

Changed Bus Channels vector to set to prevent
duplicates and cleaned logging.

[EGD-4978] Add Bluetooth virtual audio device

Bluetooth audio device requires different handling than other
audio devices. The commit adds proxy device that does not
handle requests itself but instead sends requests too Bluetooth
service.

[EGD-4869] Add bluetooth message status to application settings

This change demonstrates how to work with Bluetooth messages
in application settings windows.
Responses to bluetooth status messages are mocked because
settings storage and message handlers in Service Bluetooth
are not ready yet.

[EGD-4579] Add bluetooth settings storage

Add settings storage to bluetooth related items

Merge branch 'master' into stable

[EGD-4778] Add Bluetooth settings to db (#1174)

Merge branch 'master' into stable

[EGD-4578] bluetooth: added interface messages (#1116)

Add Bluetooth interface messages

[EGD-4578] updated class diagram

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

[EGD-4215] Convert service-bluetooth to library