Added rpmlint workflow

.github/workflows/linting.yml

@@ -23,3 +23,32 @@ jobs:
         dir: src/
         conf: .vala-lint.conf
         fail: true
+
+  rpmlint:
+    container: fedora:latest
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install rpmlint
+        run: dnf -y install rpmlint rpkg
+
+      - name: Check out sources
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+          path: swaync
+
+      - name: Copy spec into root dir
+        run: |
+          cd swaync
+          cp ./build-scripts/swaync.rpkg.spec ./
+
+      - name: Generate spec
+        run: |
+          cd swaync
+          mkdir -p specs
+          rpkg spec --source --outdir specs
+
+      - name: Start linting
+        run: |
+          cd swaync
+          rpmlint ./specs/swaync.rpkg.spec