CI(semver): Add semantic versioning

Copied from https://github.com/apache/flagon-useralejs/issues/447

**Problem**

We currently use semantic versioning but rely on developers to manually update versionings and change logs. This creates lots of room for error.

**Solution**

Enforce proper semantic versioning and change log updates via [commitizen](https://www.npmjs.com/package/commitizen).

Start by reviewing how this repository currently stores its version and updates changelogs, then read the linked commitizen documentation and compare its setup requirements with the project. Done means semantic-versioning rules and changelog updates are enforced through the project’s CI or release workflow rather than relying on manual developer updates.

Written by the indexing model from the issue text.