Add identical rule verifier

...unikoblenz/fgbks/core/dmn/domain/vdmn/VDmnInputValue.java

...z/fgbks/core/dmn/domain/vdmn/impl/VDmnInputValueImpl.java

...n/java/de/unikoblenz/fgbks/core/dmn/utils/DmnService.java

...blenz/fgbks/core/dmn/utils/boundary/AbstractBoundary.java

...s/core/dmn/utils/boundary/AbstractContinuousBoundary.java

...oblenz/fgbks/core/dmn/utils/boundary/IntegerBoundary.java

...koblenz/fgbks/core/dmn/utils/boundary/StringBoundary.java

...enz/fgbks/core/dmn/utils/boundary/checker/CheckEqual.java

...lenz/fgbks/core/dmn/verification/VerificationService.java

...n/verification/result/VerificationResultEntryElement.java

...ore/dmn/verification/verifier/impl/IdenticalVerifier.java