Add new structure for boundaries

...n/java/de/unikoblenz/fgbks/api/test/GreetingResource.java

...va/de/unikoblenz/fgbks/core/dmn/domain/vdmn/VTypeRef.java

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

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

...e/unikoblenz/fgbks/core/dmn/utils/boundary/BoundType.java

...de/unikoblenz/fgbks/core/dmn/utils/boundary/Boundary.java

...tils/boundary/BoundaryOperationNotSupportedException.java

...fgbks/core/dmn/utils/boundary/BoundaryParseException.java

...ikoblenz/fgbks/core/dmn/utils/boundary/BoundaryUtils.java

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

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

...ore/dmn/utils/boundary/checker/AbstractBoundaryCheck.java

.../fgbks/core/dmn/utils/boundary/checker/BoundaryCheck.java

...ks/core/dmn/utils/boundary/checker/BoundaryCheckType.java

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

...bks/core/dmn/verification/verifier/impl/DateVerifier.java