add github action

Author: Granitosaurus

.github/workflows/nodejs.yml

@@ -0,0 +1,20 @@
+name: Node.js CI
+
+on: 
+  workflow_dispatch:
+  pull_request:
+    
+
+jobs:
+    build:
+        runs-on: ubuntu-latest
+
+        steps:
+            - uses: actions/checkout@v2
+            - uses: volta-cli/action@v1
+            - run: npm ci --no-audit
+            - run: npm run lint --if-present
+            - run: npm test
+            - run: npm run build --if-present
+              env:
+                  CI: true