First shot at workflow, only linting for now

.github/workflows/ci.yml

@@ -0,0 +1,32 @@
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+jobs:
+  lint:
+    name: ESLint
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [16.x]
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v2
+
+      - name: Setup node ${{matrix.node-version}}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{matrix.node-version}}
+          cache: 'npm'
+
+      - name: Install node dependencies
+        run: npm ci
+
+      - name: Run ESLint
+        run: npm run lint