Added PerformanceModel for fixed wing (#22091)

* created a Performance Model for fixed wing vehicle
- added compensation for maximum climbrate, minimum sinkrate, minimum airspeed and trim airspeed based on weight ratio and air density
- added atmosphere lib to standard atmosphere calculations


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Signed-off-by: RomanBapst <bapstroman@gmail.com>
Co-authored-by: Thomas Stastny <thomas.stastny@auterion.com>

src/modules/sensors/vehicle_air_data/VehicleAirData.cpp

@@ -269,6 +269,7 @@ void VehicleAirData::Run()
 						out.baro_temp_celcius = temperature;
 						out.baro_pressure_pa = pressure_pa;
 						out.rho = air_density;
+						out.eas2tas = sqrtf(kAirDensitySeaLevelStandardAtmos / math::max(air_density, FLT_EPSILON));
 						out.calibration_count = _calibration[instance].calibration_count();
 						out.timestamp = hrt_absolute_time();