Export artifact version as ZIP

Exports a Protobuf artifact version with all its transitive dependencies as a ZIP file. The files in the ZIP are organized by their package names to match the expected directory structure for protoc compilation. Import statements are rewritten to use canonical package-based paths.

This operation is only supported for PROTOBUF artifact types.

This operation can fail for the following reasons:

• No artifact with this artifactId exists (HTTP error 404)
• No version with this version exists (HTTP error 404)
• Artifact is not of type PROTOBUF (HTTP error 400)
• A server error occurred (HTTP error 500)