[EGD-3119] Hide InputEvent's member fields

Use the InputEvent's convenience methods to express intent.

[EGD-6637] Cleanup locks structure

Renaming existing locks namespace and created proper directory
structure.

[EGD-6315] Fix issues during saving new APN

- disallow saving empty APN form - at least `Name` must be provided,
- show `Save` button only if `Name` field is not empty,
- return to APN list window after adding/editing/deleting APN
  or setting APN to default

[EGD-6452] Sound selection GUI

Sound selection GUI used to change ringtone, message sound and
notification sound in settings.

[EGD-6527] Internationalization API unification

Single api to rule i18n
all calls to localistaion in cpp files unified
cut off ass many dependencies in i18n header as possible

[EGD-6311] Audio settings windows

Added windows for phone call, messages, calendar and alarm clock
vibration and audio settings.

[EGD-6268] Add SAR info window

Window contains detailed information about SAR and certification.

[EGD-6267] Create Technical Information Window

Add Technical Information Window to display tech info on Pure.

[EGD-6266] Create Certification Window

Add Certification Window to display certification information.

[EGD-6262] Refactor Quotes

- Connect QuotesMainWindow to work with agent,
- Use DatabaseModel in Quotes and Categories models,
- Connect add/edit/remove quotes with agent

[EGD-6193] Connect Categories window with agent

Connect Categories window with agent

[EGD-6198] SpinBox input callback consume fix

Fixed SpinBox consuming all input callbacks actions.

[EGD-5902] Phone Modes Windows

Windows for phone modes created.
Offline:FightMode/messages only ServiceCellularApi created.
ConnectionFrequency and DND options settings throught AppSettings.

[EGD-5933] Display Category Selection Window

This window is needed to assist the user selecting the quotes
categories to display.

[EGD-5883] Added generic button popups attach to applications

Created structure and implementation for popup windows
attachments on button actions into applications. Moved Volume
window to fit into solution. BarGraph refactored.

[EGD-5737] Merge master into experimental

Synchronize with master before merging

[EGD-5312] Add Time selection window

- add ChangeDateAndTimeWindow,
- extract EventTimeItem to common widgets folder
  and rename it to TimeWidget,
- extract EventDateItem to common widgets folder
  and rename it to DateWidget,
- replace timeWidget with common TimeWidget
  in NightshiftWindow,
- refactor time setting in
  DesktopMainWindow and TopBar,
- Remove dead code from EventManager
  (GetNextAlarmTimestamp and HandleAlarmTrigger)

[EGD-2631] Create window for entering connection code

Create only window.
Business logic will be added later.

[EGD-5737] Merge master into experimental

Keep experimental up to date with changes from master

[EGD-5737] Merge master into experimental

Keep experimental up to date with changes from master