[R] R language bindings for Feather format #19762

This will enable work on a "Feather v2" to commence and so that the codebase in github.om/wesm/feather can be finally deprecated

Reporter: Wes McKinney / @wesm
Assignee: Romain Francois / @romainfrancois

PRs and other links:

• GitHub Pull Request #2947
• GitHub Pull Request #2953

_{Note: This issue was originally created as ARROW-3439. Please see the migration documentation for further details.}