[EGD-4919] Add API functionality to set operator

Functionality for set operator (with name) and
set autoselect were added.

[EGD-4628] Add APN settings and URC handler for PDP context

Classes supporting APN settings on modem and telephone
configuration (synchronization) have been constructed.
Possibility of asynchronous execution
of individual actions via ServiceCellularAPI.
Added message with information about deactivation of the
PDP context (URC) that the
application / service can listen on.

[EGD-4918] Change network scan for operators

Change old implementation of network scan. Now in class
which have rest of network settings as NetworkSettings.
Change method from old message style to connect/API.

[EGD-4696] Several stabilization patches. (#1192)

[EGD-3995] setup sim window prepared basing on the old settings (#913)

[EGD-3995] updated to new settings
[EGD-3995] sim switch using CellularServiceApi

Merge branch 'master' into stable

[EGD-4522] USSD sesion handling (#1121)

Added USSD sesion handlig and small fixes on USSD.

Session handling was needed to show proper window on new incoming USSD code.

Co-authored-by: Kuba Kleczkowski <dd>

Merge branch 'master' into stable

[EGD-4516] sim api: change pin, set/reset sim lock pin, switch sim (#1110)

Added: sim api: change pin, set/reset sim lock pin, switch sim 

[EGD-4423] Added MMI convertible to action messages. (#1087)

* [EGD-4423] Added MMI convertible to action messages.

* [EGD-4423] Fixed message type.

* [EGD-4423] Review applied.

* [EGD-4423] Unneded message removed, restored cellular log blocking.

Co-authored-by: Kuba Kleczkowski <dd>

Egd 4474 integration sim handling with gui (#1068)

[EGD-4474] Send meesages bloks added to drive gui and received from them response (like pin, puk). Basic flow.

[EGD-4470]Fix no send init message on ready (#1059)

Fix: no send init message on sim ready

[EGD-4403][EGD-4412] MMI support (#1021)

* cleaned up namespace and class naming in MMI framework
* extended MMI framework to support call forwarding and
  password change MMIs
* added support for requests that have different
  number of regex capture groups
* added MMI framework tests

[EGD-4063] Handling PUK/PIN (#1014)

[EGD-4063] Added handling of PIN/PUK codes for SIM card objects.
SimCard class was added (supply pin and puk, change sim, get state, get sim lock infromation, get attempts counters)
URCCpin via URC handler was added
New message type to send data handled in URCCpin handler to ServiceCellular

[EGD-4219] Convert service-evtmgr and service-lwip to library

[EGD-4217] Convert service-db to library

Egd 4097 call request recognition (#961)

* [EGD-4097] WiP Call request factory.

* [EGD-4097] Fabrication method changed.

* [EGD-4097] Call request handlers.

* [EGD-4097] Request handlers.

* [EGD-4097] Small refactor.

* [EGD-4097] Cleanup.

* [EGD-4097] Fixes aftr rebase + changelog.

* [EGD-4097] License fixed.

* [EGD-4097] PR suggestions.

* [EGD-4097] Fixxed request constructors.

* [EGD-4097] PR suggestions applied.

* [EGD-4097] Style fix.

* [EGD-4097] After rebase fix.

* [EGD-4097] Removed unnded semicolons.

Co-authored-by: Kuba Kleczkowski <dd>

[EGD-2408] Fetch sms at startup (#991)

[EGD-4216] Convert service-cellular to library

[EGD-4214] Convert service audio to library