[R] Replace vars_select, vars_rename with eval_select, eval_rename

[asfimport]

The tidyselect vars_select and vars_rename functions are on their way to being deprecated. Switch to using the newer eval_select and eval_rename functions. This is required to use the where() selection helper (ARROW-12778) Unfortunately this is not a trivial task.

Reporter: Ian Cook / @ianmcook
Assignee: Nicola Crane / @thisisnic

Related issues:

• [R] Implement use of where() inside `across() (is related to)
• [R] Properly instantiate empty arrays of extension types in Table__from_schema (is related to)
• [R] Support tidyselect where() selection helper in dplyr verbs (is depended upon by)

PRs and other links:

• GitHub Pull Request #14371

_{Note: This issue was originally created as ARROW-12105. Please see the migration documentation for further details.}

[asfimport]

Ian Cook / @ianmcook:
Note that the dplyr::relocate() method added in ARROW-11701 uses eval_select. Consult that to see an example.

[asfimport]

Neal Richardson / @nealrichardson:
Also see how dbplyr does this, esp. related to where(predicate) that isn't supported there either: https://github.com/tidyverse/dbplyr/blob/master/R/verb-select.R

[asfimport]

Nicola Crane / @thisisnic:
Issue resolved by pull request 14371
#14371