[CNSL-1941] Add release workflow and CLAUDE.md#89

fantapop merged 1 commit intocockroachdb:maincockroachdb/cockroach-cloud-sdk-go:mainfrom

fantapop:cfitzner/release-workflowfantapop/cockroach-cloud-sdk-go:cfitzner/release-workflowCopy head branch name to clipboard