ci: add graphite optimizer (#983) #5931

Job	Run time
optimize-ci	4s
detect-changes	5s
download-previous-rolldown-binaries	8s
Test (macos-latest, aarch64-apple-darwin)	2m 25s
Lint	1m 21s
Test (ubuntu-latest, x86_64-unknown-linux-gnu)	2m 8s
Test (windows-latest, x86_64-pc-windows-msvc)	4m 52s
CLI E2E test (macos-latest)	5m 40s
Local CLI `vp install` E2E test	4m 45s
CLI E2E test (windows-latest)	6m 43s
CLI E2E test (ubuntu-latest)	4m 41s
Run task	1m 27s
done	3s
	34m 22s

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