Support ENCODING in CREATE DATABASE

[zachmu]

Fixes #1261

[github-actions]

	Main	PR
covering_index_scan_postgres	392.93/s	384.96/s	-2.1%
index_join_postgres	154.81/s	153.47/s	-0.9%
index_join_scan_postgres	187.48/s	188.24/s	+0.4%
index_scan_postgres	12.43/s	12.39/s	-0.4%
oltp_point_select	2849.55/s	2816.96/s	-1.2%
oltp_read_only	1906.89/s	1867.70/s	-2.1%
select_random_points	112.06/s	110.31/s	-1.6%
select_random_ranges	137.00/s	135.94/s	-0.8%
table_scan_postgres	10.32/s	10.39/s	+0.6%
types_table_scan_postgres	5.40/s	5.32/s	-1.5%

[github-actions]

	Main	PR
Total	42090	42090
Successful	15713	15713
Failures	26377	26377
Partial Successes1	5194	5194

	Main	PR
Successful	37.3319%	37.3319%
Failures	62.6681%	62.6681%

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. ↩

[fulghum]

Looks good!