Support parquet files

[peterdesmet]

Parquet files are now supported by Frictionless Framework:

$ frictionless describe data/*.parquet
name: table
type: table
path: data/table.parquet
scheme: file
format: parquet
mediatype: appliction/parquet
schema:
  fields:
    - name: id
      type: integer
    - name: name
      type: string

Consider supporting this file type with frictionless-r

[peterdesmet]

See full overview of supported resources at https://framework.frictionlessdata.io/docs/formats/csv.html