Add lint sass test

.github/workflows/test.yml

@@ -0,0 +1,31 @@
+name: Test
+
+on:
+  push:
+    branches: [ main ]
+
+  workflow_dispatch:
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 'lts/*'
+      - name: Install dependencies
+        run: npm ci
+      - name: Run linter
+        run: npm run sass:lint
+      - name: Check EditorConfig configuration
+        run: test -f .editorconfig
+      - name: Check adherence to EditorConfig
+        uses: greut/eclint-action@v0
+        with:
+          eclint_args: |
+            -exclude=css/*