[SPARK-20371][R] Add wrappers for collect_list and collect_set

## What changes were proposed in this pull request?

Adds wrappers for `collect_list` and `collect_set`.

## How was this patch tested?

Unit tests, `check-cran.sh`

Author: zero323 <zero323@users.noreply.github.com>

Closes #17672 from zero323/SPARK-20371.