Add VSA signing and unit tests #2597
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joejstuart
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Introduce the SignVSA function, which signs a Verification Summary Attestation (VSA) JSON file using a cosign-compatible private key. The function writes a detached, base64-encoded signature alongside the VSA and returns the absolute path to the signature file. It handles key loading, passphrase support, payload reading, signing, and signature persistence with robust error handling. Add unit tests for SignVSA, covering: - Successful signing with a valid cosign private key - Error handling for missing key files - Error handling for missing VSA files https://issues.redhat.com/browse/EC-1308
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Introduce VSA signing, which signs a Verification Summary Attestation (VSA) JSON file using a cosign-compatible private key. This builds on top of the VSA generation.
https://issues.redhat.com/browse/EC-1308