refactor: split cli.rs into focused submodules (#1351) #7698

Job	Run time
optimize-ci	6s
detect-changes	4s
download-previous-rolldown-binaries	14s
Lint	1m 2s
Test (Linux x64 musl)	3m 49s
Test (namespace-profile-mac-default, aarch64-apple-darwin)	1m 9s
Test (windows-latest, x86_64-pc-windows-msvc)	3m 57s
Test (namespace-profile-linux-x64-default, x86_64-unknown-linux-gnu)	4m 33s
CLI E2E test (Linux x64 musl)	5m 25s
Local CLI `vp install` E2E test	7m 10s
CLI E2E test (windows-latest, x86_64-pc-windows-msvc)	11m 33s
CLI E2E test (namespace-profile-linux-x64-default, x86_64-unknown-linux-gnu)	3m 29s
CLI E2E test (namespace-profile-mac-default, aarch64-apple-darwin)	3m 18s
CLI snap test (x86_64-pc-windows-msvc, 1/3)	11m 23s
CLI snap test (x86_64-unknown-linux-gnu, 3/3)	7m 27s
CLI snap test (aarch64-apple-darwin, 1/3)	3m 57s
CLI snap test (aarch64-apple-darwin, 2/3)	4m 23s
CLI snap test (x86_64-unknown-linux-gnu, 1/3)	7m 12s
CLI snap test (x86_64-unknown-linux-gnu, 2/3)	7m 19s
CLI snap test (aarch64-apple-darwin, 3/3)	4m 30s
CLI snap test (x86_64-pc-windows-msvc, 2/3)	11m 45s
CLI snap test (x86_64-pc-windows-msvc, 3/3)	12m 22s
done	3s
	1h 56m 10s

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