[R] Support fixed size binary/list types

[asfimport]

Reporter: Neal Richardson / @nealrichardson
Assignee: Romain Francois / @romainfrancois

PRs and other links:

• GitHub Pull Request #7660

_{Note: This issue was originally created as ARROW-9291. Please see the migration documentation for further details.}

[asfimport]

Neal Richardson / @nealrichardson:
Issue resolved by pull request 7660
#7660