[BH-515] Create main Bell app

Create main Bell app

Merge branch 'master' into stable

[BH-373] Convert utils json into a lib

Moving json to a third-party standalone library.

[BH-353] Add Documentation for main targets

* clean up mimimu required cmake version
* fixes for release workflow

Add documentation for targets, fixes for cmake
and release workflow.

Merge branch 'master' into stable

[BH-378] Utils move log to library

Moved log to separate library

[BH-460] Moved TPLIB littlefs

Moved littlefs library to dedicated third party directory,
fixed include paths

Merge branch 'master' into stable

[EGD-6835] Fix UT link errors with inotify

Fix UT linkage error when trying to link with
libiosyscalls with inotify mechanism

Signed-off-by: Lucjan Bryndza <lucjan.bryndza@mudita.com>

[EGD-6835] Add inotify mechanism in the VFS

Add file monitoring event mechanism to the
VFS subsystem. Now it will be possible to
monitoring file changes in the reistered
path

Signed-off-by: Lucjan Bryndza <lucjan.bryndza@mudita.com>

[EGD-6752] Fix missing lock guard in the VFS driver

Fix missing lock guard in the device health status method.

Signed-off-by: Lucjan Bryndza <lucjan.bryndza@mudita.com>

[EGD-6518] Change optional methods for the DM

Change numer of minimal optional methods required by the
block device in the disk manager

Signed-off-by: Lucjan Bryndza <lucjan.bryndza@mudita.com>

[EGD-6518] Add EEPROM block device driver for VFS

Add block device driver for the factory EEPROM memory
needed for factory settings (aka personalizations)

Signed-off-by: Lucjan Bryndza <lucjan.bryndza@mudita.com>

[EGD-6576] Create EEPROM low level driver

Working eeprom driver.

[EGD-6576] WiP I2C HAL API need to be modified

WiP

[EGD-6652] Added minimalistic vfs README

It wasn't documented, minimal information added on how to mount
PurePhone partitions

[EGD-5661] Add power management for filesystem

Add peripheral control (USDHC and PLL2 clocks)
for file system support.
This will save energy and extend battery life.

[EGD-6597] Add PM control for all disc in DM

This patch add API for send power control message
for all disc registered in the disc manager. It is needed
for power management for suspend resume all discs.

Signed-off-by: Lucjan Bryndza <lucjan.bryndza@mudita.com>

[EGD-6558] Add automount mechanism of the mfgconf

Add optional mounting nfgconf partition on the EEPROM with
the LFS filesystem for the manufacturing data.

Signed-off-by: Lucjan Bryndza <lucjan.bryndza@mudita.com>

[EGD-6522] Add EEPROM emulation in the emulator

Add possibility to emulate eeprom in the linux emulator