[Companion] Radio data translation/strings (#5554)

* [Companion] Add Qt tr() functions to all radio data classes instead of using generic QObject type.  (no functional changes)

* Small fix for gcc.

* Move more element name string generation to individual classes; settle on nameToString as function name.

* Also put firmware build options translations into Firmware scope.

companion/src/modelprinter.cpp

@@ -490,7 +490,7 @@ QString ModelPrinter::printFlightModeSwitch(const RawSwitch & swtch)
 
 QString ModelPrinter::printFlightModeName(int index)
 {
-  return model.flightModeData[index].toString(index);
+  return model.flightModeData[index].nameToString(index);
 }
 
 QString ModelPrinter::printFlightModes(unsigned int flightModes)