[BH-1012] Update frontlight settings app

Removed Home View from settings list(BH-1004)
Fixed default brightness value(BH-964)
Added missing Frontlight Mode view(BH-966)
Reworked frontlight settings app using NumListItems
and EvtMgr API to control screen backlight.
Fixed minor issues with side arrows and couple of minor
bugs.

[BH-956] Fix PrewakeUp settings window bug

Fix bug which causes that
settings are saved even if the window
was exited with the back button.

[BH-1044] Fix goodbye + turnoff screen

Fix goodbye + turnoff screen

[BH-1021] Unify ListItem arrows behavior

From now min/max arrow indicators behave
the same throughout the GUI.

[BH-1029] Refactored Time widgets with colon and content change

Refactored Time widget colon handling to be mapped with used
font. Added contentChange flag and handling to BoxLayout
for dynamic recalculation of child elements.

[BH-868] Replace deprecated spinner

Replaced old, deprecated Spinner with
the new generic one. From now on, only one
implementation of spinner is used throughout the
code base.

[BH-1042] Fix frontlight timer restart

Fix frontlight timer restart

[BH-928] Fix alarm ring home screen issue

Fix issue when switching off the alarm ring,
the home screen is not coherent with figma.

[EGD-7798] Fix alarms backend with new format

New format of alarm time in database and processing

[BH-772] Use rich text instead of plain text

Use richText in BellSideListItem descriptions

[BH-772] Add bedtime reminder tone settings

Add bedtime tone and volume settings scenes
Add bedtime tone and volume support for notification

[BH-1002] Fix snooze settings UI

Add "minutes" bottom description for snooze lenght setting screen

[BH-990] Adjist CPU frequency chages

Adjusted Bell frequency low-power mode changes

[BH-943] Fix screen clean after exit

Remove cleaning screan after shutdown.

[BH-1013] Add missing alarm time on homescreen

Add missing alarm time on homescreen after alarm ringing

[BH-1039] Fixed frontlight fallback to default value

The frontlight should not fallback to its default value
once the ramp target is reached.

[BH-916] Bell factory reset

Rewritten advanced options code. Thanks Mati !

[BH-1003] Fix snooze settings UI

Add snooze chime interval bottom description

[BH-1018] Fix Bell BGSound Stack Smash

Increased application stack

[BH-932] Hide arrows on NumListItem border values

Hide arrows on NumListItem border values