[EGD-3985] Removed unique_ptr to vector for DatabaseModel updateRecords Method.

[EGD-3789] main network window
[EGD-3789] OptionSetting intoduced as a base to handle settings windows
[EGD-3789] added icons on/off/bt/right arrow
[EGD-3789] btn_ok icon used

[EGD-4062] switch release to RelWithDebInfo build

changelog: update for v0.42.1 (#820)

EGD-3868 Create queries for settings

[EGD-3800] settings api and test initial version, unit tests, reviews

[EGD-4040] Fix endless ringtone playback (#814)

[EGD-3988] SMS thread for a specific contact shall be splitted into separate ones if multiple phone numbers are available. (#801)

[EGD-3838] Introduced a meditation progress bar with simple implementation of meditation application. (#783)

[EGD-4035] Fix empty database in address book (#811)

When address book database is empty the
PhoneBook aplication hang.

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

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

Added links, corrected small typos, etc. (#809)

Fixed links, added new README draft, etc.

[EGD-3998] New db engine (3.33.0) and vfs passing PRAGMA support back to sqlite

Doc updated for UI and removed some doc for bluetooth

* removed taglib doc build, main readme shown by default on start
* made better diagrams for UI shown in doxygen
* removed old docs for bluetooth

EGD-3992 Create main window for apps and tools

[EGD-3739] Rewriting boot and update article (#790)

Rewriting boot and update article

[EGD-3991] Rewrite clean phone update (#791)

Rewrote the article, moved it to Confluence and removed it from GitHub

Rewriting key bindings on Linux article (#780)

[EGD-3735] Running MuditaOS on Mudita Pure article rewrite (#770)

Running on phone article rewritten

Added Code of Conduct taken from https://www.contributor-covenant.org/ (#760)

[EDG-3982] Removed unnecessary files, some of the moved to Confluence (#786)

Removed unnecessary files, some of the moved to Confluence