ci: add workflow

.github/workflows/ci.yml

@@ -0,0 +1,31 @@
+name: Build, test, and lint
+on:
+  push:
+    branches: [ dev, main ]
+  pull_request:
+    branches: [ dev, main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node: [ '16' ]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup node
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node }}
+      - name: Cache Node modules
+        uses: actions/cache@v3
+        with:
+          path: node_modules
+          key: ${{ runner.OS }}-build-${{ hashFiles('**/package-lock.json') }}
+      - name: Install dependencies, build assets, and run tests
+        run: |
+          npm install
+          npm run build
+          npm run test
+      - name: Run Stylelint
+        run: npm run lint