Implement the rdf validate command

[Ostrzyciel]

Basically, the "oracle" mentioned in Jelly-RDF/jelly-protobuf#27

Takes as input at most three files:

• (optional) A: input RDF data – if provided, jelly-cli validates if it is equivalent to C
  • It can be split over multiple files – allow for specifying multiple inputs by wildcard
• (optional) B: stream options – if provided, jelly-cli validates if C uses B
• (required) C: Jelly data – jelly-cli parses it and validates in detail
• (optional) delimited or non-delimited data expected – by default accept either

We can reuse the usual parser here, but with additional bells and whistles.

• A == C comparison will be done using the ordered RDF isomorphism algorithm
• B used by C comparison is trivial (must be matched 1:1)
• Additional C validation:
  • Can be parsed and transformed into Jena Triple/Quad objects without errors
  • If generalized statements are disabled, they should not be present
  • If RDF-star is disabled, quoted triples should not be present
  • Logical stream type must be consistent with the physical type

CC-ing @adanilenka @bswck – if you have any suggestions for things to check, go for it!

[Ostrzyciel]

I'll push to have it in v0.1.0

will see if it happens