feat: add OpenBao plugin RPMs for consul and nomad secrets engines

- Add openbao-plugin-secret-consul v0.1.0 RPM configuration
- Add openbao-plugin-secret-nomad v0.1.4 RPM configuration
- Add openbao-plugins v1.0.0 meta package that installs both plugins
- Plugins install to /opt/openbao-plugins directory
- Include pre-install scripts to create plugin directory
- Support for EL8 and EL9 distributions

rpms/openbao-plugins/Dockerfile

@@ -0,0 +1,18 @@
+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 resources from the context into the container
+COPY resources /app/resources
+
+# Default command to build RPMs
+CMD /app/resources/build.sh