[EGD-4952] Reverted usage of settings

[EGD-4952] Added stetings for battery critical level

Merge branch 'master' into stable

[EGD-4751] Change: new filesystem handling implementation in module services. (#1151)

Due to vfs deprecation there is need to remove all vfs calls from code. This PR covers module services. It also contains minor fixes in module-services.

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

[EGD-4343] use new settings in ServiceAudio (#997)

* [EGD-4343] ServiceAudio moved to new settings

Merge branch 'master' into stable

[EGD-3572] SettingsTable exchanged to settings::Settings (#968) (#1044)

[EGD-3572] Application has an instance of Settings - removed from derived apps
[EGD-3572] Application is the owner of Settings handling for its windows/widgets
[EGD-3572] Settings header moved to service-db public section

[EGD-4354] settings starting script moved to two separated scripts (#1067)

[EGD-4383] Settings moved from namespace Settings to namespace settings (#1007)

* [EGD-4383] Settings moved from namespace Settings to namespace settings

[EGD-4448] ssettings variable register fixed (#1045)

Revert "[EGD-3572] SettingsTable exchanged to Settings::Settings (#968)" (#1035)

This reverts commit f11bc1f0d0120c04ee6f826f75c9e8a9f5894602.

Co-authored-by: Hubert Chrzaniuk <hubert.chrzaniuk@mudita.com>

[EGD-3572] SettingsTable exchanged to Settings::Settings (#968)

[EGD-3572] Application has an instance of Settings - removed from derived apps
[EGD-3572] review issues resolved
[EGD-3572] shared_ptr -> unique_ptr
[EGD-3572] Primary Key for settings_tab:path
[EGD-3572] empty values handling

[EGD-4264] directory reordering (#1001)

* [EGD-4264] VFS directory reordering

Currently VFS uses flat directory structure
for disc manager I need more sofisticated directory layout

* [EGD-4264] Remove redundant -Wno

* [EGD-4261] New purefs API

* [EGD-4264] Unittest fixes

* [EGD-4264] Directory relativity

* [EGD-4264] Relative path fixes

* [EGD-4264] Fix RT1051 compile errors

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

[EGD-4217] Convert service-db to library

[EGD-4200] Message handling refactored. (#974)

[EGD-3360] Input and display language separation, input language setting implementation (#920)

[EGD-4053] unit tests framework for Settings (#864)

[EGD-4053] update queries

[EGD-4053] connect Settings, SettingsAgent, SettingsMessages and queries

[EGD-4053] change settings interface to async

[EGD-4053] mock-logs.cpp commented out -duplicated symbol in linking

[EGD-4053] review issues solved

[EGD-3852] clean include in service (#928)

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