Origin moved from GitHub to Gitea. release-please-action and ghcr.io are
GitHub-specific and don't work on Gitea Actions, so the release-please
flow is dropped in favor of manual tag-trigger docker builds.
- Add .gitea/workflows/docker-build.yml: builds and pushes to
gitea.shcizo.se/shcizo/pdga-rating on tag push (v*)
- Remove release-please-config.json and .release-please-manifest.json
- Neutralize .github/workflows/release-please.yml to workflow_dispatch
(kept as reference; can't be deleted via tooling under .github/)
Samuel Enocsson