Support persisting docs for `materialized_view` materializations #519

Job	Run time
Integration Tests (3.8)	10m 12s
Integration Tests (3.9)	10m 6s
Integration Tests (3.10)	9m 50s
Integration Tests (3.11)	8m 6s
Test psycopg2 build version (ubuntu-22.04, 3.8)	1m 15s
Test psycopg2 build version (ubuntu-22.04, 3.11)	1m 16s
Test psycopg2 build version (macos-12, 3.8)	1m 50s
Test psycopg2 build version (macos-12, 3.11)	1m 51s
	44m 26s

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