[SPARK-20532][SPARKR] Implement grouping and grouping_id

## What changes were proposed in this pull request?

Adds R wrappers for:

- `o.a.s.sql.functions.grouping` as `o.a.s.sql.functions.is_grouping` (to avoid shading `base::grouping`
- `o.a.s.sql.functions.grouping_id`

## How was this patch tested?

Existing unit tests, additional unit tests. `check-cran.sh`.

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

Closes #17807 from zero323/SPARK-20532.