Improve pantograph selector

- A new parameter has been added to .fiz file format, in the Switches: section:
  - PantographPresetDefault [0] - The 0-based index of a pantograph preset that should be chosen upon the vehicle creation. 0 by default mimicks the current behavior.

- Fixed the selected pantograph configuration not being respected until the configuration has been changed.

McZapkie/Mover.cpp

@@ -11100,6 +11100,7 @@ void TMoverParameters::LoadFIZ_Switches( std::string const &Input ) {
             std::remove( std::begin( presets ), std::end( presets ), '|' ),
             std::end( presets ) );
     }
+    extract_value( PantsPresetDefault, "PantographPresetDefault", Input, "" );
 }
 
 void TMoverParameters::LoadFIZ_MotorParamTable( std::string const &Input ) {