[PLAT-3489] Added normalisation / time series adjustment to H_T_S_LATEST and created a helper function in HTSFunctionUtils
[3664] Requirements for 'Position Greeks' eg ValueRequirementNames.POSITION_DELTA
[3665] Margined misspelled
[3664] Addl requirements for 'Value Greeks' eg ValueRequirementNames.VALUE_DELTA, VALUE_GAMMA
[3664] Adding UnitScalingFunction for POSITION_* Greeks so that outputs will resolve for the position