Implemented a couple jsonb functions

[zachmu]

No description provided.

[github-actions]

	Main	PR
covering_index_scan_postgres	347.00/s	319.46/s	-8.0%
index_join_postgres	143.40/s	142.66/s	-0.6%
index_join_scan_postgres	173.82/s	171.86/s	-1.2%
index_scan_postgres	11.52/s	11.29/s	-2.0%
oltp_point_select	2604.67/s	2514.38/s	-3.5%
oltp_read_only	1740.32/s	1736.62/s	-0.3%
select_random_points	100.19/s	100.67/s	+0.4%
select_random_ranges	119.10/s	123.09/s	+3.3%
table_scan_postgres	9.13/s	9.18/s	+0.5%
types_table_scan_postgres	4.92/s	4.94/s	+0.4%

[github-actions]

	Main	PR
Total	42090	42090
Successful	15686	15685
Failures	26404	26405
Partial Successes1	5209	5205

	Main	PR
Successful	37.2678%	37.2654%
Failures	62.7322%	62.7346%

${\color{lightgreen}Progressions (3)}$

jsonb

QUERY: SELECT jsonb_build_array('a', NULL);

QUERY: SELECT jsonb_build_object('a', NULL);

QUERY: SELECT jsonb_build_object(1,2);

Footnotes

1. These are tests that we're marking as Successful, however they do not match the expected output in some way. This is due to small differences, such as different wording on the error messages, or the column names being incorrect while the data itself is correct. ↩

[Hydrocharged]

LGTM!