[EGD-3597] Shape rendering refactored. (#827)

[EGD-4082] fixed build in Debug

[EGD-4080] Fix Media Player crash (#832)

[EGD-3773] added A2DP playback backend

[EGD-559] Volume popup - audio part

[EGD-4024] Fix audio files meta tags parsing (#817)

EGD-4036 Application windows - added register mechanism

* Moved ApplicationLauncher to separate files - declutering
* WindowsStore renamed to WindowsFactory - Store needs to be splitted toavoid antipattern
* Options window build dynamically onBeforeShow
* Dialog windows dynamically built

EGD-4077 Re-enable support for temporary contacts in Phonebook main window

[EGD-4022] Update Docker image

[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.