[EGD-4797] Battery bar as widget

Battery bar now is present as
a separate widget in top bar.
Additionally refactored passing
battery status.

[EGD-5158] Change access to the bus methods

The bus is now accessible only via Service object.

[EGD-5311] Create Date&Time main window

- add DateAndTimeSettings class and
  dateAndTimeSettings global var
  (cache for storing date and time related settings),
- add DateAndTimeChangeRequest messages and proper
  methods in app::manager::Controller for sending them,
- handle DateAndTimeChangeRequest messages in ApplicationManager,
- add SettingRightItem::Text case for OptionSettings
  to provide possibility to add text
  on the right side of particular option,
- rename fields in db (settings_tab table):
  gs_time_format_12 to gs_time_format
  and
  gs_time_date_format to gs_date_format
- create only main Date&Time window.
  Sub windows will be added in separate task.

[EGD-2514] Fix clock does not refresh

There was no refresh trigger that would cause items like clock
to display its up-to-date state while user is being inactive.
This PR solves that issue providing timer-based refresh trigger
that is dependent on user activity.

[EGD-5519] Lockscreen does not ask for pin after reset solved

Name of parameter for lockscreen mode on/off updated in sql script.
Register on param lockscreen only reacts on value change.

[EGD-5387] Volte settings change problem solved

Volte settings made global. Merge issue regarding screen lock resolved

Merge branch 'master' into stable

[EGD-4960] lockScreenPasscodeIsOn is a global setting

[EGD-4960] Settings Interface added parameter do distinguish global/app settings
[EGD-4960] global/local setting determined by enum value, unregister all variables in one call, ut updated
[EGD-4960] SettingsScope usage in SettingsMessages

[EGD-4801] Add application-wide top bar manager

Applications configure the top bar once for all their windows.
Sometimes, windows need to configure top bars with its configuration.

[EDG-4717] Add screen for brightness control

Window for manual and automatic screen brightness control.

Merge branch 'master' into stable

[EGD-4995] Add changing passcode windows flow

Implement changing passcode windows flow

Merge branch 'master' into stable

[EGD-5166] Add query-callback synchronization mechanism

Receiver object cancels the callbacks at the end of its lifecycle.

[EGD-4968] Change GUI service to optimize flow and memory management

Gui and Eink services refactor.
Displaying frames performance optimization.
Critical resources management.

battery renames, clean up, degreasing

[EGD-4932] new battery icons + battery in TopBar rework

[EGD-4727] Change Torch hardware control

Change way of button usage

Merge branch 'master' into stable