Support for Jelly-Patch

[Ostrzyciel]

Gathering ideas for new commands to support Jelly-Patch: https://w3id.org/jelly/dev/specification/patch

• patch from-jelly and patch to-jelly – same as the rdf commands, with support for Jena's Patch formats.
• patch diff – produce an RDF Patch by diffing two files OR by diffing consecutive frames in a Jelly-RDF stream
• patch apply – with arguments specifying which patches to use – replay a portion of a .jellyp file and output the resulting dataset.
  • Note: will require a lot of memory! Not sure if to include it.