👷 add build workflow

Author: JonasDoebertin

.github/workflows/build.yml

@@ -0,0 +1,16 @@
+name: Build
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Install
+        run: npm ci --no-audit --no-fund
+      - name: Build
+        run: npm run build