Rename the fork from gitea-mcp to gitea-mcp-extended to reflect the
significantly expanded tool coverage (299 vs upstream's 93 tools).
- Rename Go module path and all import references
- Rename binary to gitea-mcp-extended in Makefile, Dockerfile, .gitignore
- Point .goreleaser.yaml gitea_urls to git.lethalbits.com
- Replace release-tag workflow with goreleaser + Generic Package Registry publishing
- Replace release-nightly workflow with cross-platform build + nightly package publishing
- Update CLAUDE.md project description and tool count
- Rename job from `release` to `goreleaser` in `release-tag.yml`
- Change the tag pattern from `' * '` to `" * "` in `release-tag.yml`
- Update job steps to better describe their actions in `release-tag.yml`
- Replace build steps with GoReleaser action steps in `release-tag.yml`
- Add configuration file `.goreleaser.yaml` for GoReleaser
- Include hooks, builds, archives, changelog sorting, and release footer in `.goreleaser.yaml`
Signed-off-by: appleboy <appleboy.tw@gmail.com>
