[EGD-7798] Fix alarms backend with new format

New format of alarm time in database and processing

[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-943] Fix screen clean after exit

Remove cleaning screan after shutdown.

[BH-618] Power nap fixes

Implemented various fixes:
BH-995
BH-996
BH-997
BH-998
Fixed PlayActions
and more.

[BH-903] Pre-wake up frontlight

Implemented a frontlight handling for the pre-wake up.
Major clean-up of the frontlight implementation.

[EGD-7615] Fix Modem soft reset

Cellular is configuring modem after reset.

[BH-773] Add bedtime reminder application

Add bedtime time and on/off UI setup app
Add bedtime event notification window
Add bedtime audio assets
Implement bedtime notification TimeService backend
Add bedtime unittests

[EGD-7440] Fix BT statusbar after BT disconnect

BT statusbar was set by disconnect message, which was not
aware of BT on/off status, thus always after disconnect
the statusbar icon was set to idle/enabled

[EGD-7754] Dates bumped in disclaimers

Dates bumped from 2020 to 2021.

[CP-615] Update existing backup/restore implementation in OS

[CP-648] Handle updated API requests

Updated B&R to handle new API
Extended error reporting
Backup/Restore code clean up

[CP-649] Check OS version compatibility during restore
Added check of OS and backup versions
Fixed adding of version.json to PurePhone.img

[CP-599] Add crc hash to the last chunk of sent file

CRC was counted in one go before starting to send
chunks of the file, which, in the case of a large file,
caused communication to stop for a long while.
In the current implementation, CRC is counted
incrementally while sending individual file chunks.
It is then appended to the last chunk of the file.

[EGD-7725] Tune up file system io access

Increasd io stream buffers:
- 64kB for big files with short lifetime scope
- 16kB for big files with long lifetime scope
- 1kB - dont changes default forr the rest

[EGD-7457] Fix Service antenna based on urc

Not needed AT commands request removed from service antenna.

[EGD-7587] Change stream buffer size for fs endpoint

Increases stream buffer size, to make sure it is working faster
on ext4 partition.

[EGD-7760] Fix building for GCC11

There was missing header

[EGD-7730] Alarm audio calls fixes

Added system sound setting. Refactored Alarm sound settings.
Fixed linux audio device initial volume level. Fixed Alarm
vibrations.

[EGD-7614] Add Enable Rndis mode

Adds enabling Rndis mode in modem, so tethering is possible
on Linux, Mac and Windows.

[BH-843] Reset procedure

Added reset procedure.
Refactored linux KeyInput.
Added support for multipress.

[EGD-7086] Add BT profile connection info

Added info about connected profile to the devices list

[EGD-7743] Fix crash on BT device name save

Due to enabled EHCILL the shutdown procedure takes longer time
than before, so restarting by turning off and on without a delay
caused crash in the BT stack. Added delay between shutdown and
power on to let the stack turn off completely