Merge GitHub actions

.github/workflows/lint-and-deploy.yaml

@@ -0,0 +1,35 @@
+name: Check, build and deploy to GitHub Pages
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Lint
+        run: |
+          npm ci
+          npm run lint && git diff
+          if [[ `git status --porcelain` ]]; then
+            exit 1
+          fi
+  build-and-deploy:
+    concurrency: ci-${{ github.ref }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Install and Build
+        run: |
+          npm ci
+          npm run build
+
+      - name: Deploy
+        uses: JamesIves/github-pages-deploy-action@v4.2.2
+        with:
+          branch: gh-pages
+          folder: dist