ci: release on version tags

[luojiyin1987]

Summary

• Add a workflow for v-prefixed version tags.
• Check that each tag matches the package version.
• Run package validation before Release creation.
• Attach the npm tarball to the GitHub Release.
• Generate Release notes from repository history.

Checks

• actionlint .github/workflows/release.yml
• npm exec prettier -- --check .github/workflows/release.yml
• git diff --cached --check

Closes #143