Implement extractFromSemiStructured for postgres #17702

Job	Run time
Build	2h 2m 33s
Run Unit Tests	34m 52s
Test Module - sqlserver	6m 22s
Test Module - memsql	9m 18s
Test Module - server	25m 25s
Test Module - ide-tools	11m 24s
Test Module - deephaven	6m 45s
Test Module - python	19m 45s
Test Module - databricks	3m 47s
Test Module - javaBinding	11m 59s
Test Module - h2	7m 21s
Test Module - snowflake	3m 24s
Test Module - elasticsearch	5m 51s
Test Module - sql	8m 56s
Test Module - spanner	6m 20s
Test Module - relationalStore	7m 45s
Test Module - graphql	5m 57s
Test Module - postgres	7m 21s
Test Module - core	10m 20s
Test Module - oracle	10m 22s
Test Module - duckdb	7m 39s
PCT Report	0s
	5h 33m 26s

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