Add stylelint (#344)

Author: sonic16x

.github/workflows/ci.yml

@@ -19,6 +19,9 @@ jobs:
       - name: Lint
         run: npm run lint
 
+      - name: Stylelint
+        run: npm run stylelint
+
   test:
     name: Tests:units
     runs-on: ubuntu-latest

.stylelintrc.json

@@ -0,0 +1,12 @@
+{
+  "extends": [
+    "stylelint-config-standard-scss",
+    "stylelint-config-idiomatic-order",
+    "stylelint-config-standard-scss"
+  ],
+  "rules": {
+    "selector-class-pattern": null,
+    "block-no-empty": null,
+    "no-empty-source": null
+  }
+}