Add VerifyConfidentialSpace to verifier.Client (#593) #126

Job	Run time
Lint ./cmd (ubuntu-latest, Go 1.21.x)	1m 53s
Lint ./ (ubuntu-latest, Go 1.21.x)	1m 21s
Lint CGO (ubuntu-latest, Go 1.21.x)	55s
Lint ./launcher (ubuntu-latest, Go 1.21.x)	2m 11s
Generate/Build/Test (macos-14-large, x64, Go 1.21.x)	3s
Generate/Build/Test (ubuntu-latest, x32, Go 1.21.x)	2s
Generate/Build/Test (ubuntu-latest, x64, Go 1.21.x)	1s
Generate/Build/Test (macos-latest, arm64, Go 1.21.x)	5m 1s
	11m 27s

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