[EGD-6505] Implement “On when active” Keypad light functionality

Implement “On when active” Keypad light functionality

[EGD-5360] Add USB current selection

Charging current selection algorithm
depending on USB type.

[EGD-6486] Fix for settings not avaialble at phone startup

Fixed the comparison function of EntryPath objects.

[EGD-6507] Enable per-module testing

Add per-module:
 - test build
 - test execution
 - coverage reporting (xml/html).

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

[EGD-6494] Application Manager on action switch fix

Application Manager switch on Action no longer causes to
newly opened application main window switch but it
calls declared action handler.

[EGD-6485] Restore Contact operations handling

Previous commit on EGD-6485 removed ContactAdd/Update/Remove
cases that were still in use

[EGD-6347] Refactored phone modes handling in applications

PhoneModeObserver doesn't work properly in applications.
Applications have to handle the phone mode changes via AppMgr.
Phone mode and tethering handlers separated.

[EGD-6485] ServiceDB cleanup

Remove old unused ServiceDB API and deprecate its remains still being
in use.

[EGD-6208] Add blocking phone mode changes during tethering

When the tethering is enabled, the phone mode shouldn't change,
now, any attempt ends with a notification

[EGD-6285] Fix system close

Add proper way of closing
system services

[EGD-6324] Update audio assets

Upload latest audio assets. Original file names preserved.

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

[EGD-6082] Fix cellular start harness test

Improved cellular cold and hot start harness test

[EGD-6433] Implement SIM PIN enable request

Implement SIM PIN enable/disable request
in PinLockHandler

[EGD-6214] Add slider position reading after disabling tethering

To be able to set proper phone mode changed by the slider during
tethering, the forced readout of slider position has been added

[EGD-4736] Change PIN windows

Implement changing SIM PIN code flow

[EGD-6352] Add Factory reset mode

Stop DB service
Delete DB files
Make reboot

[EGD-6209] Tethering confirmation popup added

Provided a tethering confirmation popup.
The popup shows up once a USB cable is connected to a PC.

[EGD-6350] Added bluetooth device volume control

Bluetooth device volume control can be set by Pure Phone
while paired and is in A2DP mode. Temporarly disabled
HSP since it's not fully working and causing control issues.

[EGD-4734] Add PIN settings window

This window displays switch button for
disabling/enabling pin code for sim card.
Its also starting point for changing pin code.
Added actions for enabling and disabling
pin code for sim card.
Added method for checking if pin code is
set for sim card.

[EGD-6416] Add handling of headset keys

Change the volume level using headset keys