[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-6657] ApplicationDesktop clean-up

This PR cleans-up `ApplicationDesktop` after recent changes in
home screen notifications handling.

[EGD-6676] PhoneLock handling with ServiceDesktop

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

[EGD-5632] Remove "systemStarted" from "DeveloperMode" EndPoint

Remove `systemStarted` field as it's no longer used.

[EGD-6571] Fix error message

`std::filesystem::remove_all` function returns
number of files and directions removed.
Return value in `cleanupAfterUpdate` from this function
wasn't properly interpreted and returns an error even if shouldn't.

[EGD-6352] Add Factory reset mode

Stop DB service
Delete DB files
Make reboot

[EGD-5834] Fix restore API

Change restore API
backup/restore/update harness tests

[EGD-6283] Fix to slow Application Desktop start

ApplicationDesktop start was slowed down by two synchronous DB calls:
-get unread threads count
-get unread calls count
Both were replaced with asynch versions.

[EGD-4863] Add harness test for cellular sleep mode

Adding test for outgoing call and text message
in cellular sleep mode

[EGD-5783] Revert EGD-5783

Revert "EGD-5783 Exclude empty body from response message"
This reverts commit b64eb0622b6c5e59eeb2161223e793ba4164ceb9.

[EGD-5783] Exclude empty body from response message

Remove body field from response message,
if it contains null. Add 204 and 501 status codes
and use them in proper responses.
204 stands for success but no content, and 501
means endpoint is not implemented.
Additionally some minor fixes.

[EGD-6191] Fix harness call tests

* This PR provides a fix for the bug reported in [EGD-6081].
The solution adds the `tear_down`-like fixture called after the
problematic tests, that enforce focus on `ApplicationDesktop'`s
main window.
* Additionally similar solution was added to `test_auto_lock`
to restore original (30s) lock timeout.

[EGD-6081]: https://appnroll.atlassian.net/browse/EGD-6081

[EGD-6230] Fix reading of cheksum.txt file

Fix errors regarding update.

[EGD-5945] Bluetooth-harness API messages

This PR:
* provides Bluetooth-Harness API messages definition [EGD-5944]
* provides Bluetooth-Harness API messages implementation
* provides Bluetooth-Harness API usage on harness side [EGD-5946]
* provides Bluetooth-Harness tests [EGD-5947]

[EGD-5965] Add BT-Harness API documentation

Added documentation:
* BT endpoint API
* BT-Harness tests

[EGD-5449] Add final prompts windows

Added Dialog windows for "configuration successful"
"no configuration" and "update OS" for Onboarding.
Refactor Dialog window implementation and usage of
DialogMetadata in other applications.

[EGD-6130] Fix update process (stack size, fscopy)

Increase stack size for service-desktop to 8192
Change fs syscall rename() to copy() (rename seems
to fail when moving data across different filesystems)

[EGD-5565] Fix update process on new lf filesystem

These changes are needed for update to work with new
LFS fileystem, also minor bugfixes are included.

[EGD-5512] Usb security refactor and devices pairing

Move all security related functionality to single security endpoint
Paired devices can be added to avoid further passcode requests