* Fix of the issue that incoming call triggered
handsfree ringing which didn't stop after
calling side hung up.
* Cleanup of several places in code, minor
bluetooth <-> cellular integration refactor.
Fix of the issue that forgotten BT device
reappeared on 'All devices' list after
reentering the list from home screen.
Additionally fixed pairing confirmation
popup that wouldn't hide after pressing
"Confirm".
When BT was connected (or just turned on) there was no dialing state -
the call went directly to ongoing call. Moreover, fixed no ringing
sound during ringing state - there was a bug in BT stack.
Fix of the issue that after connecting
to Bluetooth device it was impossible
to disconnect using Disconnect button.
Refactor of connect/disconnect events
naming (and all names related).
Added tests and calls substate
bluetooth sm diagram created
All old bluetooth tests reviewed and updated
removed new - with queue it's not required
removed TODO
Co-authored-by: Bartosz Cichocki <sp2fet@gmail.com>
