Add version check to rdf validate

[adanilenka]

Currently, rdf validate allows version tag being set to 0.

Example input:

# Frame 0
rows {
  options {
    stream_name: ""
    physical_type: PHYSICAL_STREAM_TYPE_TRIPLES
    generalized_statements: false
    rdf_star: false
    max_name_table_size: 4000
    max_prefix_table_size: 150
    max_datatype_table_size: 32
    logical_type: LOGICAL_STREAM_TYPE_FLAT_TRIPLES
    version: 0
  }
}
rows {
  prefix {
    id: 0
    value: "http://example.org/"
  }
}
rows {
  name {
    id: 0
    value: "subject"
  }
}
rows {
  name {
    id: 0
    value: "predicate"
  }
}
rows {
  name {
    id: 0
    value: "object"
  }
}
rows {
  triple {
    s_iri {
      prefix_id: 1
      name_id: 0
    }
    p_iri {
      prefix_id: 0
      name_id: 0
    }
    o_iri {
      prefix_id: 0
      name_id: 0
    }
  }
}

transforming to jelly with:
jelly-cli rdf to-jelly ./text.txt --to ./in.jelly --in-format jelly-text

and running jelly-cli rdf validate ./in.jelly gives no error

jelly-cli rdf from-jelly ./in.jelly also decodes the triple with no issues

[Ostrzyciel]

rdf from-jelly actually can decode it, according to the spec: The consumer SHOULD throw an error if the version tag is zero. SHOULD is not MUST.

But yes, validate should catch it.