feat(check): Allow to only check trees+packs for given snapshots #1007

Job	Run time
Cross checking x86_64-pc-windows-msvc	2m 39s
Cross checking x86_64-pc-windows-gnu	11m 36s
Cross checking x86_64-apple-darwin	26s
Cross checking aarch64-apple-darwin	1m 38s
Cross checking x86_64-unknown-linux-gnu	5m 8s
Cross checking x86_64-unknown-linux-musl	29s
Cross checking aarch64-unknown-linux-gnu	6m 1s
Cross checking i686-unknown-linux-gnu	5m 30s
Cross checking x86_64-unknown-netbsd	5m 45s
Cross checking armv7-unknown-linux-gnueabihf	5m 47s
Result (Cross-CI)	1s
	45m 0s

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