add github workflow to enforce linting of JS files (#348)

.github/workflows/lint_js.yml

@@ -0,0 +1,16 @@
+name: lint_js
+
+on: [pull_request, push]
+
+jobs:
+  check:
+    name: lint_js
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v3
+        with:
+          node-version: '16'
+      - run: npm ci
+      - run: npm run lint
+      - run: npm run format -- --check