LDT-5291: Cloud Communication - SW - 01 - Device-RT to Cloud - Integration - Demo Focus - R&I - 03: DEV - Feature Implementation & Code Document [& Diagnostics]
- Renamed message handling to CAN routing.
- Update MqttClient to simplify and move responsibility/functionality to class encapsulating it.
- Updated MqttClient::init() to verify that the CA, certificate and key files exist before use.
- Added CloudConnectController::loadConfig() and removed the config paths from the constructor.
- Added CloudConnectController inbound cloud message handling and decoding the protobuf.
- Removed the temporary protobuf capture-to-file code and its Capture INI section.
- Updated CloudConnect.ini format.
- Added logging categories config, proto, can.routing, mqtt, mqtt.stats and comms.types, and converted the bare qInfo/qWarning calls to categorized logging.
- Updated Types::getValue() and Types::getBits() to warn when the buffer is too short.
- Updated the protobuf Header to drop deviceSerialNum.
- Updated serializeProto() and canMessageToProtobufByteArray() to return bool and write the result through a QByteArray out-parameter.
- Updated CloudConnect.pro to add the Qt Mqtt module.
