[feature-array](array-function) add array constructor function array() (#14250)
* [feature-array](array-function) add array constructor function `array()`
```
mysql> select array(qid, creationDate) from nested_c_2 limit 10;
+------------------------------+
| array(`qid`, `creationDate`) |
+------------------------------+
| [1000038, 20090616074056] |
| [1000069, 20090616075005] |
| [1000130, 20090616080918] |
| [1000145, 20090616081545] |
+------------------------------+
10 rows in set (0.01 sec)
```