[EGD-3852] convert to libs services: gui, eink (#933)

Revert "[EGD-4168] passcodes for sim change to variable length (#924)" (#934)

This reverts commit d29ee76fa546a32e9e004de2833c25e818fb94f5.

[EGD-3839] Cellular - get time zone (#903)

[EGD-4170] Cellular - modem reset (#929)

[EGD-4169] Fix call timer (#908)

[EGD-4168] passcodes for sim change to variable length (#924)

[EGD-3852] clean include in service (#928)

[EGD-4029] Prevent call handler recursively (#927)

Prevent call notification handler from thread which
register notification handler.

Co-authored-by: Lucjan Bryndza <lucjan.bryndza@mudita.com>

DesktopMainWindow notifications update (#886)

[EGD-4138] updated BT docs (#884)

Co-authored-by: SP2FET <bartosz.cichocki@mudita.com>

[EGD-4189] BoxLayout Center Alignment calculation fixed when margins are present. (#926)

[EGD-4179] Recursive file list API (#912)

Recursive file list API with callback added
to the freertos FAT implementation

Co-authored-by: Lucjan Bryndza <lucjan.bryndza@mudita.com>

[EGD-4029] Missing header in the VFS notifier (#923)

Co-authored-by: Lucjan Bryndza <lucjan.bryndza@mudita.com>

[EGD-4004] audio: fix routing synchronization (#880)

Protect copying to buffers with mutex locks. Fix C style copying.

Add sanity checks to detect synchronization issues when routing.

[EGD-3722] Add ButtonOnOff widget (#911)

[EGD-4160] renamed PureOS -> MUDITAOS (#901)

[EGD-4121] UCS2 32 bit support (#897)

[EGD 4142] Creating i18n article (#902)

* Added first draft of i18n article

[EGD-4075] Build script version checker (#909)

Check for mtools version.
Check if the required commands are installed

Co-authored-by: Lucjan Bryndza <lucjan.bryndza@mudita.com>

[EGD-4158] Added network access technology indicator