[R] Allow rename Table and RecordBatch columns with names()

[asfimport]

Allow R users to rename columns in Table and RecordBatch objects using names(obj) <- value syntax.

Reporter: Ian Cook / @ianmcook
Assignee: Ian Cook / @ianmcook

PRs and other links:

• GitHub Pull Request #8616
• GitHub Pull Request #8643

_{Note: This issue was originally created as ARROW-10522. Please see the migration documentation for further details.}

[asfimport]

Neal Richardson / @nealrichardson:
Issue resolved by pull request 8643
#8643