[EGD-7798] Fix alarms backend with new format

New format of alarm time in database and processing

[EGD-7800] Enable SDP register on BT startup

To be able to pair properly using SSP the BT device have to know
which services we're running, thus we need to register SDP entries
after startup of the BT stack

[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

[EGD-7770] Fix atomic stability

Add global __GTHREADS definition to trick standard library into thinking
we have a proper threading support and that it should not used single
threaded locking policies. As a result shared pointers will use atomic
locking policy to synchronize access to reference counter.

Add own version of gthr.h to override __gthread_active_p.

Add cxa guard and release for globs.

Looks like there was conflict when __GTHREADS was set so own version of
atomicity.h is removed.

Co-authored-by: Alek Rudnik <aleksander.rudnik@mudita.com>
Co-authored-by: Lucjan Bryndza <lucjan.bryndza@mudita.com>
Tested-by: Alek Rudnik <aleksander.rudnik@mudita.com>
Tested-by: Tomasz Krosnowski <tomasz.krosnowski@mudita.com>
Signed-off-by: Marcin Smoczyński <smoczynski.marcin@gmail.com>

[EGD-7799] Enable SSP authorised pairing

This enables Simple Secure Pairing which is required to pair
from another device (device -> Pure). As for now, only KeyboardOnly
capabilities are enabled as we have all frontend and backend
already enabled for entering the pin code/passkey

[BH-990] Adjist CPU frequency chages

Adjusted Bell frequency low-power mode changes

[BH-943] Usb stack version update

Fix usb stack version downgrade

[EGD-7777] File indexer - limited supprted files

File indexer supported files are now limited to wav, mp3, flac.

[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.

[EGD-7339] Correct preparation time unit

60s was displayed instead of 1m.

[EGD-7796] Fix display of central button in meditation options

SWITCH button was displayed instead of SELECT.

[EGD-7793] Remove 15 and 30m from meditation preparation time list

Such long preparation time is not needed - removed.

[EGD-7797] Change the way the text is displayed in Meditation app

Line break was placed incorrectly.

[EGD-7790] Change font for interval chime component

Adjust font size according to designs.

[EGD-7232] Music player track preview

Added track progress bar and track preview window.

[BH-916] Bell factory reset

Rewritten advanced options code. Thanks Mati !