[BH-378] PR changes

PR changes - mainly includes

[BH-378] Style fixed

Fixed style

[BH-378] Utils move log to library

Moved log to separate library

[BH-353] Add minimal build target for BH

* add BellHybridMain
* fixing post review

Git automatically converts BellHybird as move from source/main.cpp to
prevent this and maintain "main.cpp" history adding new target as
separate commit.

[BH-353] Add minimal build target for BH

Introducing changes required for adding BellHybird target without
removing PurePhone.
Adden new targets:
* Pure (builds PurePhone and PurePhone.img)
* Bell (builds BellHybird and BellHybird.img)
* [PurePhone|BellHybrid]-[UpdatePackage|StandaloneImage)

[EGD-6746] Expose new Message types system-wide

Allow all modules to access Request/Notification Message send templates.

[BH-364] Move TPLIB magic_enum to separate dir

Changed submodule directory and updated cmake scripts and include paths

[EGD-6746] Use new SimCard implementation

Switch to SimCard implementation provided by previous commit

[EGD-6728] Documentation cleanup

Cleanup acc. to guidelines created in EGD-6632.

[EGD-6746] New SimCard implementation

New approach to the Cellular SimCard submodule

[EGD-6019] Minimum settings ownership lifetime fixups

added weakptr link to settings and checks
    it wont crash on deinitialized setings now
Pseuto UT are passing
Added:
    - deregistration on Settings destrution
    - weak referencing of Service to not crash Settings on missuse
    - Proxy as initialization parameter to Settings
Unused code removed
Enabled tests to be written for Settings
Removed dependency from freertos in test global file
EntryPath tests updated and compilation slimed

[EGD-6019] Revert of two commits

This reverts commit b6416b15dac3a638d803681fbad8746b1808b6aa.
This reverts commit e2f3882d8a0194ae6f74bfc5ab6104c368174517.

[EGD-6019] Minimum settings ownership lifetime fixups

added weakptr link to settings and checks
    it wont crash on deinitialized setings now
Pseuto UT are passing
Added:
    - deregistration on Settings destrution
    - weak referencing of Service to not crash Settings on missuse
    - Proxy as initialization parameter to Settings
Unused code removed
Enabled tests to be written for Settings

[EGD-6676] PhoneLock handling with ServiceDesktop

Replaced old PhoneLock handler in ServiceDesktop with new
interactions with Application Manager PhoneLockHandler.

[EGD-6617] Added option to disconnect handler in service

Till now we were only able to connect handlers to services, but
disconnect was not possible. With nullptr handler system would crash

[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-6575] Rename Unicast with timeout as UnicastSync

Using Unicast with timeout is dangerous and strongly discouraged.
This change allows for more precise tracking of such cases.

[EGD-6507] Enable per-module testing

Add per-module:
 - test build
 - test execution
 - coverage reporting (xml/html).

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

[EGD-6347] Refactored phone modes handling in applications

PhoneModeObserver doesn't work properly in applications.
Applications have to handle the phone mode changes via AppMgr.
Phone mode and tethering handlers separated.

[EGD-6208] Add blocking phone mode changes during tethering

When the tethering is enabled, the phone mode shouldn't change,
now, any attempt ends with a notification