Push release build to registry and create draft release.

[pammecrandall]

Proposed changes

• Creates a draft github release on a release branch and pushes the docker image to github container registry on a release tag.
• Pushes the docker image to github container registry on a release tag.

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

[lucacome]

Is it the plan to create release branches? It might be overkill at this point in the project 🤔