Add a workflow file to run a CI

.github/workflows/main.yml

@@ -0,0 +1,28 @@
+name: CI
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+jobs:
+  run-ci:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18
+          check-latest: true
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run 'lint' task
+        run: npm run lint
+
+      - name: Run 'test' task
+        run: npm run test