Add `find_shortest_cycle` #474

Job	Run time
Check Rust	37s
benchmarks	14m 18s
Check Python 3.9, ubuntu-latest	52s
Check Python 3.9, macos-latest	55s
Check Python 3.9, windows-latest	39s
Check Python 3.10, ubuntu-latest	49s
Check Python 3.10, macos-latest	58s
Check Python 3.10, windows-latest	42s
Check Python 3.11, ubuntu-latest	41s
Check Python 3.11, macos-latest	46s
Check Python 3.11, windows-latest	40s
Check Python 3.12, ubuntu-latest	46s
Check Python 3.12, macos-latest	52s
Check Python 3.12, windows-latest	42s
Check Python 3.13-dev, ubuntu-latest	56s
Check Python 3.13-dev, macos-latest	50s
Check Python 3.13-dev, windows-latest	48s
	26m 51s

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