nydusify: refactor check subcommand #3405

Job	Run time
contrib-unit-test-coverage	1m 37s
contrib-lint (contrib/nydusify)	1m 5s
nydus-build (amd64)	2m 6s
contrib-build (amd64)	50s
contrib-lint (contrib/nydus-overlayfs)	57s
nydus-build (arm64)	2m 11s
cargo-deny	50s
contrib-build (arm64)	17s
nydus-build (ppc64le)	1m 57s
contrib-build (ppc64le)	47s
nydus-build (riscv64)	1m 56s
nydusd-build-macos (amd64)	2m 47s
contrib-build (riscv64)	44s
nydus-unit-test	4m 56s
nydusd-build-macos (arm64)	2m 30s
nydus-unit-test-coverage	3m 7s
takeover-test	2m 7s
performance-test (fs-version-5)	1m 46s
performance-test (fs-version-6)	1m 59s
performance-test (zran)	1m 48s
nydus-integration-test	9m 27s
upload-coverage-to-codecov	0s
	45m 44s

Provide feedback