Chore: to_json unit/benchmark tests #1872

Job	Run time
Build native and prepare data	19m 41s
Run TPCDSQuerySuite (broadcast)	27m 38s
Run TPCDSQuerySuite (sort_merge)	30m 9s
Run TPCDSQuerySuite (hash)	31m 30s
	1h 48m 58s

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