refactor: modernise RPM builder with Python tooling

- Replace Makefile version/release file system with metadata.yaml only
- Add Python build automation (./tools/build) with Gitea API integration
- Add GitHub release updater (./tools/update-gh) for version management
- Centralize Dockerfiles into single parameterized Dockerfile
- Remove 54+ individual package Dockerfiles and version directories
- Update Makefile to use new Python tooling
- Add GITEA_API_TOKEN validation to prevent duplicate builds
- Support both explicit version/release args and metadata.yaml reading

rpms/act_runner/0.2.12/release

@@ -1 +0,0 @@
-1

rpms/act_runner/Dockerfile

@@ -1,18 +0,0 @@
-FROM git.unkin.net/unkin/almalinux9-rpmbuilder:latest
-
-# Create output directory for RPMs
-RUN mkdir -p /app/dist
-
-# Set working directory
-WORKDIR /app
-
-ARG PACKAGE_RELEASE
-ENV PACKAGE_RELEASE=${PACKAGE_RELEASE}
-ARG PACKAGE_VERSION
-ENV PACKAGE_VERSION=${PACKAGE_VERSION}
-
-# Copy nfpm.yaml from the context into the container
-COPY resources /app/resources
-
-# Default command to build RPMs
-CMD /app/resources/build.sh