feat(query): Support array lambda function

[b41sh]

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Summary

Support array lambda function

• array_transform
• array_apply
• array_filter

for example

mysql> select array_transform([1, 2, NULL, 3], x -> x + 1);
+------------------------------------------------+
| array_transform([1, 2, null, 3], x -> (x + 1)) |
+------------------------------------------------+
| [2,3,NULL,4]                                   |
+------------------------------------------------+
1 row in set (0.04 sec)
Read 1 rows, 1.00 B in 0.006 sec., 181.05 rows/sec., 181.05 B/sec.

mysql> select array_apply(['data', 'a', 'b'], data -> CONCAT(data, 'bend'));
+---------------------------------------------------------------+
| array_apply(['data', 'a', 'b'], data -> concat(data, 'bend')) |
+---------------------------------------------------------------+
| ['databend','abend','bbend']                                  |
+---------------------------------------------------------------+
1 row in set (0.03 sec)
Read 1 rows, 1.00 B in 0.005 sec., 183.59 rows/sec., 183.59 B/sec.

mysql> select array_filter(['Hello', 'abc World'], x -> x LIKE '%World%');
+---------------------------------------------------------------+
| array_filter(['hello', 'abc world'], x -> (x like '%world%')) |
+---------------------------------------------------------------+
| ['abc World']                                                 |
+---------------------------------------------------------------+
1 row in set (0.03 sec)
Read 1 rows, 1.00 B in 0.008 sec., 128.79 rows/sec., 128.79 B/sec.

part of #7931

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Name	Status	Preview	Comments	Updated (UTC)
databend	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 30, 2023 4:59am

[BohuTANG]

Need a document for this cool feature. cc @soyeric128