RLS — Sample C++ Header

-In header definition(P.58), "#include <vector>" should added.
-RoLoAttributeValueSet class(P.58)
-The class name "RoLoAttributeValueSet" should replace "RoLoAttributeValueList".
-The type of value "std::set<RoLoAttributeSingleValue>"
should replace "std::vector<RoLoAttributeSingleValue>".
-RoLoAttributeType(P.59)
-ISO19111::IO_IdentifiedObject should added as super class.
-UniformGaussian(P.62)
-The super class "RoLoErrorType" should replace "ErrorDistribution".
-DirectSymbol(P.65)
-The attribute "dimension:Integer" should be added.
-ErrorElementSpecification(P.69)
-The attribute "errType:RoLo Error Type" should be added.
-StreamParameterSet(P.72)
-In super class "RLS::RoLoAbility", "RLS::" should be deleted.
-StreamAbility(P.72)
-In super class "RLS::RoLoAbility", "RLS::" should be deleted.

All suggestions except the one for ErrorElementSpecification is now unnecessary
due to changes made in other issues.