Added build RPM workflow

.github/workflows/build-rpm.yml

@@ -0,0 +1,83 @@
+name: Build RPM Package
+
+on:
+  workflow_run:
+    workflows: [auto-tag]
+    types: [completed]
+  push:
+    tags:
+      - v[0-9]+.[0-9]+.[0-9]+
+
+jobs:
+  build-upload-rpm:
+    name: Build and upload RPM packages
+    runs-on: ubuntu-latest
+    container:
+      image: fedora:latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: install RPM build tools
+        run: |
+          dnf -y install \
+            cmake \
+            gcc \
+            gcc-c++ \
+            git \
+            rpm-build \
+            rpmdevtools \
+            tar
+
+      - name: Setup RPM build tree
+        run: |
+          rpmdev-setuptree
+
+      - name: Create source tarball
+        run: |
+          cmake --fresh -B build -S .
+          cmake --build build --target sdist
+
+      - name: Set environment variables
+        run: |
+          echo "PKG_VERSION=$(cat build/version)" >> $GITHUB_ENV
+          echo "PKG_NAME=$(grep -Po 'Name:\ *\K[\S ]*' \
+            packaging/pkg.spec.in)" >> $GITHUB_ENV
+
+      - name: Copy SOURCES and SPEC file
+        run: |
+          cp packaging/pkg.spec.in ~/rpmbuild/SPECS/${PKG_NAME}.spec
+          rpmdev-bumpspec -n ${PKG_VERSION} ~/rpmbuild/SPECS/${PKG_NAME}.spec
+          cp dist/*.src.tar.gz ~/rpmbuild/SOURCES/
+
+      - name: Build RPM packages
+        run: |
+          dnf -y builddep ~/rpmbuild/SPECS/${PKG_NAME}.spec
+          rpmbuild -ba ~/rpmbuild/SPECS/${PKG_NAME}.spec
+
+    - name: Upload built SRPM/RPM packages
+      uses: actions/upload-artifact@v4
+      with:
+        name: artifact-built-rpms
+        path: |
+          ~/rpmbuild/RPMS/
+          ~/rpmbuild/SRPMS/
+
+      - name: Check if package version has corresponding git tag
+        id: tagged
+        shell: bash
+        run: |
+          git show-ref \
+            --tags --verify --quiet -- \
+            "refs/tags/${NEW_TAG}" \
+          && echo tagged=1 >> $GITHUB_OUTPUT \
+          || echo tagged=0 >> $GITHUB_OUTPUT
+
+    - name: Create GitHub Release
+      uses: softprops/action-gh-release@v2
+      if: github.ref_type == 'tag' && steps.tagged.output.tagged == 1
+      with:
+        generate_release_notes: false
+        files: |
+          ~/rpmbuild/RPMS/*/*.rpm
+          ~/rpmbuild/SRPMS/*.rpm