feat: add pgsql-parse package with comment and whitespace preservation #1040

Job	Run time
parser-tests (pgsql-deparser)	2m 26s
parser-tests (plpgsql-deparser)	1m 11s
parser-tests (pgsql-parser)	1m 9s
parser-tests (@pgsql/quotes)	1m 5s
parser-tests (@pgsql/transform)	5m 57s
parser-tests (plpgsql-parser)	1m 8s
parser-tests (pg-proto-parser)	1m 16s
	14m 12s

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