Document csv_schema.json

[moisbo]

Example from corpus tools

  const schemaEntity = {
    "@id": generateArcpId(collector.namespace, "schema", "csv"), //"arcp://name,ausnc.ary/csv_schema", // REPOSITORY-UNIQUE NAME
    "@type": "CreativeWork",
    "Name": "Frictionless Table Schema for CSV transcription files in the Sydney Speaks corpus",
    "sameAs": schemaFileName, //Reference to the schema file above TODO: is this the best link?
    "conformsTo": [{
      "@id": "https://specs.frictionlessdata.io/table-schema/"
    }]
  }