feat: Implement `partition_statistics` API for `SortMergeJoinExec` #4915

Job	Run time
cargo test hash collisions (amd64)	10m 5s
linux build test	5m 8s
Run sqllogictests with the sqlite test suite	1h 16m 32s
cargo test 'extended_tests' (amd64)	33m 21s
	2h 5m 6s

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