[SPARK-24069][R] Add array_min / array_max functions
## What changes were proposed in this pull request?
This PR proposes to add array_max and array_min in R side too.
array_max:
```r
df <- createDataFrame(cbind(model = rownames(mtcars), mtcars))
mutated <- mutate(df, v1 = create_array(df$gear, df$am, df$carb))
head(select(mutated, array_max(mutated$v1)))
```
```
array_max(v1)
1 4
2 4
3 4
4 3
5 3
6 3
```
array_min:
```r
df <- createDataFrame(cbind(model = rownames(mtcars), mtcars))
mutated <- mutate(df, v1 = create_array(df$mpg, df$cyl, df$hp))
head(select(mutated, array_min(mutated$v1)))
```
```
array_min(v1)
1 6
2 6
3 4
4 6
5 8
6 6
```
## How was this patch tested?
Unit tests were added in `R/pkg/tests/fulltests/test_sparkSQL.R` and manually tested. Documentation was manually built and verified.
Author: hyukjinkwon <gurwls223@apache.org>
Closes #21142 from HyukjinKwon/sparkr_array_min_array_max.
95a651339e