Add release workflow

[0xlukem]

This pull request introduces a new GitHub Actions workflow to automate the process of building, verifying, and publishing the Python package to PyPI upon a new release. The workflow ensures version consistency, verifies the build artifacts, and attaches the distribution files to both PyPI and the GitHub Release.

New release automation workflow:

• Added .github/workflows/release.yml to automate package publishing on release, including steps for building distributions, validating version tags, verifying artifacts, and uploading to PyPI and GitHub Release assets.

Key features of the workflow:

• Checks out the release tag and sets up Python 3.12 for the build process.
• Validates that the GitHub release tag matches the version specified in pyproject.toml to prevent mismatched releases.
• Builds both wheel and source distribution files, and verifies that exactly one of each is produced.
• Publishes the built distributions to PyPI using trusted publishing.
• Uploads distribution files as assets to the corresponding GitHub Release for easy access.

[Copilot]

Pull request overview

Adds a new GitHub Actions workflow to automate building and publishing this Python package when a GitHub Release is published, including basic checks for tag/version consistency and artifact presence.

Changes:

• Added a release-triggered workflow that checks out the release tag and builds wheel + sdist.
• Added validation that the GitHub release tag matches pyproject.toml’s project.version.
• Added publishing to PyPI (trusted publishing) and upload of built distributions to the GitHub Release as assets.

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