Add cloudberry-go-libs-release.sh for Apache release staging

[tuhaihe]

Add cloudberry-go-libs-release.sh, a release staging script adapted from cloudberry-backup-release.sh. All project references have been updated from "cloudberry-backup" to "cloudberry-go-libs", including the script name, tarball prefix (apache-cloudberry-go-libs-*), Git tag message, and upstream remote URL (git@github.com:apache/cloudberry-go-libs.git).

Key differences from the original script:

• Version is always derived from the Git tag. The VERSION file dependency has been removed — no VERSION file is needed.
• Project root detection uses go.mod instead of a VERSION file, matching the conventions of a Go module project.

All other release logic (tool detection, tag validation, GPG signing, SHA-512 checksum, macOS extended attribute cleanup, submodule archiving, and artifact verification) is preserved verbatim.

closes: #ISSUE_Number

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Change logs

Describe your change clearly, including what problem is being solved or what document is being added or updated.

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[tuhaihe]

Test the script on my local machine and it works.

[leborchuk]

LGTM, read script, check interface and descriptions - all looks good and clear