Implement Release Please and Automate Publishing

**Is your feature request related to a problem? Please describe.**
Release Please automates a lot of the drudgery of managing release notes. We should implement. Then we can also tie it into the Github Actions that also managing publishing Helm artifacts to the Github container registry, where we are currently hosting the chart.

https://github.com/googleapis/release-please

Start by reviewing the repository's existing GitHub Actions workflows and Helm chart publishing setup. Read the Release Please documentation and trace how Helm artifacts are currently published to the GitHub container registry. Done means release notes are automated and the release workflow reliably publishes the chart through GitHub Actions.

Written by the indexing model from the issue text.