ARROW-12751 adds a row-wise min/max kernel to the C++ library. Add R bindings so users can call pmin() and pmax() in dplyr verbs. Use ElementWiseAggregateOptions to ensure that NA values are handled the same as in base::pmin() and base::pmax().

Reporter: Ian Cook / @ianmcook
Assignee: Mauricio 'Pachá' Vargas Sepúlveda / @pachadotdev

Related issues:

• [C++] Add variadic row-wise min/max kernels (least/greatest) (depends upon)

PRs and other links:

• GitHub Pull Request #10615

_{Note: This issue was originally created as ARROW-12967. Please see the migration documentation for further details.}