Minimal refactor and fixes:
* Add dockerignore file to re-use already built images
* Add Image Pull Secrets to Deployment Template (https://github.com/keel-hq/keel/pull/758)
* Update Go Version to 1.21 (https://github.com/keel-hq/keel/pull/751)
* Added Github Workflow to use the Github repository as a Helm Chart Repository through Github Pages
* Create debug container to allow GO remote debugging
* Add integration with Azure Pipelines
* Add compose files to setup local development containers
David