By separating them from unrelated code, their dependents
can use them without depending on unrelated code, which
in turn helps to reduce cyclic dependencies.
Reason was: hardcoded channel spacing to 8.33kHz
As a result changed to channel spacing based on COM unit, which could also be changed at runtime
* the issue itself was in own aircraft context
* added functions for channel spacing
* changed to COM unit channel spacing (instead of hardcoded spacing)
However, there are cases where the "own model" is changed via own model context, mostly in the emulated driver.
* made changedModel -> ps_changedModel a "private" signal
* connected it to simulator context
* used identifier to avoid roundtrips
So the "ownAircraftModelChanged" signal of the simulator context is to be used
Although the reverse lookup of a model is correct, it's aircraft ICAO code is wrong
Issues found
* in the driver the ICAO code is permanently overridden -> commented out
* there are two contexts, own aircraft and simulator, but only one uses reverse lookup -> now both
* using Qt::QueuedConnection for context -> GUI
* Before this commit, only the true altitude was known for an aircraft situation. The pressure altitude was not available anywhere yet.
* This caused a wrong altitude in radar clients.
* We fix this reading the pressure altitude from the simulators and set it in the own aircraft situation.
* MS Flight Simulators have the pressure altitude in the APIs available.
* For X-Plane and emulated simulator, we need to calculate it from the pressure at sea level.
* Finally, we use the new available pressure altitude to send it to the FSD server.
Maniphest Tasks: Ref T223
* utility function if web data are already available
* moved setOwnAircraftModel as reverseLookupAndUpdateOwnAircraftModel to CSimulatorCommon
* reverseLookupAndUpdateOwnAircraftModel also handles async lookup when data are not yet available
* removed context ps_allSwiftWebDataRead reverse lookup, done in CSimulatorCommon now
* function for default model and situation in context (so they can be reused as in login component)
* use CDatabaseUtils::consolidateOwnAircraftModelWithDbData for lookup
* changed signature of ownAircraftModelChanged to model
* added function for a reverse lookup of a model (string->model) and use it when model changed
* renamed function to updateByLocalFileNames
