feat(ci): Add rpmlint action to lint spec files (#6)

Performs rpmlint on all spec files in the repository

.github/workflows/rpmlint.yml

@@ -0,0 +1,40 @@
+name: Lint packages
+on:
+  pull_request:
+    branches:
+      - main
+    paths-ignore:
+      - '**.md'
+      - '**.txt'
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - '**.md'
+      - '**.txt'
+  merge_group:
+  workflow_dispatch:
+
+jobs:
+  push-ghcr:
+    name: rpmlint
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+    strategy:
+      fail-fast: false
+    steps:
+      - name: Perform checkout
+        uses: actions/checkout@v4
+
+      - name: Find spec files
+        run: |
+          SPECS=$(find ./ -type 'f' | grep ".spec")
+          echo "SPECS=$SPECS" >> $GITHUB_ENV
+
+      - name: Run rpmlint
+        uses: EyeCantCU/[email protected]
+        with:
+          rpmfiles: ${{ env.SPECS }}