[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-5523] ListView OnPageElement and Options refresh

Added new OnPageElement listView rebuild type. Created new
options refresh. Refactored DisplayLight Setting. BarGraph rector.
Added step render limit for small radius arcs.

[EGD-4977] Reduce audio lag during voice call

Reduce audio delay by reducing audio buffer size in router operation.
Audio streams are now created directly in the operations, not in the
audio service, which gives more flexibility.

Audio Buffer size is calculated based on endpoints (source, sink) and
operation capabilities. This commit also enables allocations in a
non-cacheable region of OCRAM for endpoints that use DMA for data
transport.

Introduce power-of-two operations that use built-in functions and
possibly dedicated hardware instructions of an MCU. These operations
are required by the audio stream buffer size calculation algorithm.

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

[EGD-4753] Disable broken unit tests

After fixing log mocking for unit tests, it turned out that some tests
were not executed in the CI and as a result they were broken during
development.

Disable broken tests until they're fixed to unblock valid PRs.

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

[EGD-5451] Cleaned i18n header from vfs

internationalization is included nearly everywhere in system it
should not be polluted with include which is to be removed

[EGD-4831] Add license headers to c, h and sql files

Add license headers to `h`, `c` and `sql` files as this files haven't
been checked previously, script now to automatically updates current
year in existing licenses.

[EGD-5462] SML library introduced

Introduced SML library for further state machines development.

[EGD-5073] Add UI modifications in Calendar after review

Changes mainly concern margins, positions, sizes etc of items in:
- Custom repeat window,
- New/Edit event window,
- No events window.

[EGD-4708] Add backend of multiday events handling

-sql req for multiday events handling
-Add UT
-Add markEventsInDays method
-Add new query for day filter

[EGD-5181] Add Circular and Logger buffers

Add RandomStringGenerator class.
Implement Circular and Logger buffers.
Add UTs for LoggerBuffer.

Merge branch 'master' into stable

[EGD-5325] Remove using namespace directives from headers

"Using namespace" directive should not be added in headers
because this practice pollutes source files.

[EGD-4417] Fix operations in calculator

1. Fix possibility to write illogical operations.
2. Fix possibility to write multiple '0' when it is not needed.
3. Add scientific notation when result do not fit on screen.

[EGD-5250] Change time format on home screen and status bar

This commit changes time format displayed on home screen 
and on status bar by adding new locale for 12H format, 
which excludes am/pm suffix.
The new locale is set as new default format for time string.

Minor: Grammar typo fixed.

Merge branch 'master' into stable

[EGD-4429] Enable DEBUG_MODEM_OUTPUT_RESPONSE to true

All those logs are crucial for identification of modem issues.
All modem debug logs are disabled in runtime by default.

[EGD-4429] Fix gui issues in application call

Fix the persistent answer and reject labels in Call Window issue
Fix the wrong call duration issue in both Call and Calls apps
Fix the not working call ignoring issue

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-4711] Change calendar events endpoints

-Create providers object
-Change endpoints data message structure to json object
-Extend ical format validation
-Extend service desktop tests for calendar endpoints