Small refactoring
New KPV + test

GroundspeedSpeedbrakeHandleDuringTakeoffMax
Derive Spoiler from Spoiler (L/R) In/Outboard
New KPV + test

GroundspeedSpoilerDuringTakeoffMax
Fixes in tests: TestMachMinusMMOMax and TestAirspeedMinusVMOMax
Fix TestThrottleReductionToTouchdownDuration