Implement partition compaction grouper #10718

Job	Run time
build	4m 12s
lint	4m 19s
CodeQL	6m 55s
test	16m 4s
test-no-race	7m 40s
integration-configs-db	2m 47s
integration (requires_docker)	7m 17s
integration (integration_alertmanager)	4m 10s
integration (integration_backward_compatibility)	10m 35s
integration (integration_memberlist)	7m 23s
integration (integration_querier)	15m 6s
integration (integration_ruler)	5m 39s
integration (integration_query_fuzz)	4m 44s
deploy_website	0s
deploy	0s
	1h 36m 51s

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