refactor(conv): Optimize the graph search based algorithm #575

Job	Run time
Coverage preset=rust-coverage	1m 47s
ubuntu-latest, preset=rust-release	1m 21s
Coverage preset=rust-with-sqlite-coverage	1m 48s
ubuntu-latest, preset=rust-with-sqlite-release	1m 27s
Coverage preset=c99-coverage	1m 7s
ubuntu-latest, preset=c99-release	29s
Coverage preset=c99-with-uhash-coverage	1m 9s
ubuntu-latest, preset=c99-with-uhash-release	34s
windows-latest, preset=rust-release	4m 35s
windows-latest, preset=rust-with-sqlite-release	3m 50s
windows-latest, preset=c99-release	2m 56s
windows-latest, preset=c99-with-uhash-release	1m 59s
macos-latest, preset=rust-release	1m 15s
macos-latest, preset=rust-with-sqlite-release	1m 14s
macos-latest, preset=c99-release	29s
macos-latest, preset=c99-with-uhash-release	28s
Final Results	1s
	26m 29s

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