New release process and development guideline

• Ref: GitLab Release Process
• Release checklist
  • https://gitlab.com/gitlab-org/configure/general/-/blob/master/.gitlab/issue_templates/Configure%20upgrade%20checklist.md#auto-build-image
• auto-deploy-image
  • https://gitlab.com/gitlab-org/cluster-integration/auto-deploy-image/-/blob/master/README.md
  • Development Guide
  • Release
• auto-deploy-app
  • https://gitlab.com/gitlab-org/charts/auto-deploy-app/-/blob/master/README.md
  • Link to the auto-deploy-image.
  • Deprecate