Refactor all the RDF wrapping per kernel #3
Description
All the kernels in the org.data2semantics.mustard.kernels.rdfdata package are essentially wrappers to easily use and RDFDataSet as input.
This wrapping can be generalized into one or two wrapper classes, similarly to the Hub Removal Kernels.The current invidual wrappers can remain, but implemented via this general wrapper.