Implement partition compaction grouper #10854

Job	Run time
lint	4m 22s
test	15m 43s
CodeQL	6m 52s
build	4m 1s
test-no-race	7m 22s
integration-configs-db	2m 53s
integration (requires_docker)	7m 9s
integration (integration_alertmanager)	4m 2s
integration (integration_backward_compatibility)	10m 9s
integration (integration_memberlist)	7m 17s
integration (integration_querier)	15m 16s
integration (integration_ruler)	5m 31s
integration (integration_query_fuzz)	4m 43s
deploy_website	0s
deploy	0s
	1h 35m 20s

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