Feature: Retrieve Key Log IDs via `RaftLogReader::get_key_log_ids()` #4160

Job	Run time
lint	12m 6s
cluster-benchmark (cluster_benchmark)	50s
examples (stable, memstore)	52s
openraft-feature-test (nightly)	51s
examples (stable, raft-kv-memstore)	2m 29s
openraft-test (stable, 0)	3m 35s
openraft-feature-test (nightly, serde)	56s
openraft-test-bench (nightly)	1m 3s
examples (stable, raft-kv-memstore-network-v2)	49s
openraft-test (nightly, 30)	3m 28s
openraft-feature-test (nightly, single-term-leader)	58s
examples (stable, raft-kv-memstore-opendal-snapshot-data)	1m 16s
openraft-test (nightly, 0, single-term-leader)	3m 13s
openraft-feature-test (nightly, single-term-leader,serde,singlethreaded)	49s
examples (stable, raft-kv-memstore-singlethreaded)	51s
rt-monoio	43s
examples (stable, raft-kv-rocksdb)	8m 26s
stores (stores/memstore)	52s
examples (nightly, memstore)	1m 0s
Build (nightly, bench,serde,bt,singlethreaded)	51s
tests-feature-test (nightly)	3m 2s
examples (nightly, raft-kv-memstore)	2m 21s
stores (stores/rocksstore)	6m 16s
tests-feature-test (nightly, single-term-leader)	3m 2s
stores (stores/sledstore)	1m 16s
examples (nightly, raft-kv-memstore-network-v2)	1m 6s
tests-feature-test (nightly, loosen-follower-log-revert)	2m 59s
examples (nightly, raft-kv-memstore-opendal-snapshot-data)	1m 25s
examples (nightly, raft-kv-memstore-singlethreaded)	1m 9s
examples (nightly, raft-kv-rocksdb)	6m 45s
	1h 15m 19s

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