[Ruby] Import Red Parquet

[asfimport]

I want to donate Ruby bindings for Apache Parquet GLib. It's developed by me at https://github.com/red-data-tools/red-parquet .

Reporter: Kouhei Sutou / @kou
Assignee: Kouhei Sutou / @kou

PRs and other links:

• GitHub Pull Request #2772

_{Note: This issue was originally created as ARROW-3529. Please see the migration documentation for further details.}

[asfimport]

Wes McKinney / @wesm:
Issue resolved by pull request 2772
#2772