* renamed fromQVariant to convertFromQVariant, the "from" methods imply the object is changed (fromJson, fromString ..)
* implemented fromQVariant - changing the object by QVariant
* moved toQVariant into PQ template
* free function setFromQVariant
* setup will provide some metadata about the flight simulator, such as path, version etc.
* there will be a sim independent setup class, providing common information such as path, is simulator installed, etc.
* a sim dependent class on top will provide the values specific to one sim
* setup will contain the logic to fetch its values: setup->init
