Clarify naming of the methods related to the mapper

Cache mappers instead of the loose maps

make the toJson more standard

Move comparison functionality to a lib, add tests for the lib

Rename EnumMapBuilder to EnumMapper

remove extra test, fix tests naming

Add more tests for EnumMapBuilder

Add unit tests for EnumLib and EnumMapBuilder; remove check of Enum d…

…efined in base class

Split the enum into Enum, Lib and Map Builder

simplify tests