[EGD-4167] Add n display languages loaded from files (#1047)

[EGD-3220] Convert service-fota to library (#1038)

Revert "[EGD-3572] SettingsTable exchanged to Settings::Settings (#968)" (#1035)

This reverts commit f11bc1f0d0120c04ee6f826f75c9e8a9f5894602.

Co-authored-by: Hubert Chrzaniuk <hubert.chrzaniuk@mudita.com>

[EGD-3572] SettingsTable exchanged to Settings::Settings (#968)

[EGD-3572] Application has an instance of Settings - removed from derived apps
[EGD-3572] review issues resolved
[EGD-3572] shared_ptr -> unique_ptr
[EGD-3572] Primary Key for settings_tab:path
[EGD-3572] empty values handling

Revert "[EGD-4344] vfs-utils refactor (#1010)" (#1027)

This reverts commit e6ca468d2c0a3d3f9a045c123ee901690e2b28a9.

[EGD-4344] vfs-utils refactor (#1010)

* [EGD-4344] removed vfs-utils.cpp and moved all the functions
to utils or eventStore

* [EGD-4344] removed vfs-utils.cpp and moved all the functions
to utils or eventStore

* [EGD-4344] moved methods to utils::filesystem

* Update module-utils/Utils.cpp

Co-authored-by: Piotr Tanski <piotr.tanski@mudita.com>

* Update module-utils/Utils.cpp

Co-authored-by: Piotr Tanski <piotr.tanski@mudita.com>

* Update module-utils/Utils.cpp

Co-authored-by: Piotr Tanski <piotr.tanski@mudita.com>

* [EGD-4344] test fixes, linux fixes, GUI fixes

* [EGD-4344] rebase fixes

* [EGD-4344] bugfixes for rt1051 and mutex support in EventStore

Co-authored-by: Piotr Tanski <piotr.tanski@mudita.com>

[EGD-4217] Convert service-db to library

[EGD-4216] Convert service-cellular to library

[EGD-4215] Convert service-bluetooth to library

[EGD-4200] Message handling refactored. (#974)

[EGD-3360] Input and display language separation, input language setting implementation (#920)

[EGD-4261] stdlib file access syscalls for RT1051 platform (#952)

* [EGD-4261] Initial version of syscalls

* [EGD-4261]  CR small fixes

* [EGD-4261] Rename namespace and fsync call

Rename namespace vfs::internal for clarify that syscall functions are for internal use only

* [EGD-4261] Handle manager for stdlib

Handle manager layer for STDIO compatibility.

* [EGD-4261] Initial version of sysscall (old vfs)

* [EGD-4261] Direntry syscalls completed

* [EGD-4261] Fixes in handle manager

* [EGD-4261] Add support for std::filesystem.

libstdc++ from compiler is compiled without <dirent.h>
, so std::directory_iterator doesn't work.
Our implementation fix this issue and override
libstdc++ library code

* [EGD-4261] Compile syscalls only on RT1051 target

* [EGD-4261] RT compile fix

* [EGD-4261] Code review small fixes

* [EGD-4261] Code review fixes

* [EGD-4261] Remove redundant noisy debug log msg.

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

[EGD-4288] refactor global data (#959)

Reduce firmware size by refactoring global data defined in public
headers.

Each global variable which require runtime initialization adds
initialization code to every translation unit which includes the header
where the variable is defined and declared.

[EGD-4213] Convert service-appmgr to library - library (#960)

[EGD-4151] Application manager actions introduced. (#905)

* [EGD-4151] Application manifest structure defined.
* [EGD-4156] Applications registry and basic action handler implemented.

EGD-3585 ServiceGUI and ServiceEink initial cleanup (#953)

* EGD-3585 SerwiceGUI and ServiceEink initial cleanup

* moved code to one function per message handling
* removed dead code from comments
* added Service.cpp demangling to debug messages for clear output
* added Response value to return messages to `connect()`

EGD-4178 EINK inverted mode (#915)

* EGD-4178 Added simplistic eink invert mode option

[EGD-4051] Based application manager app switching on application stack. (#858)

* [EGD-4051] Based application manager app switching on application stack.

* [EGD-4051] Application manager thorough refactor.

[EGD-4011] added BT audio device with A2DP playback (#870)

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

[EGD-3743] Removed old doxygen copyright statements from project.