Rust

Add a new key switch method and support `q>2N` #447

Job	Run time
Document	1m 10s
Check with compatibility requirement	1m 9s
Test (ubuntu-latest)	1m 36s
Build (ubuntu-latest, x86_64-unknown-linux-gnu, build)	46s
Test (windows-latest)	3m 7s
Build (windows-latest, x86_64-pc-windows-msvc, build)	1m 54s
Test (macos-latest)	1m 0s
Build (macos-latest, aarch64-apple-darwin, build)	29s
	11m 11s

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