add github action

.github/renovate.json

@@ -0,0 +1,10 @@
+{
+	"extends": [
+		"config:base",
+		":prHourlyLimitNone",
+		":prConcurrentLimitNone",
+		":semanticCommits"
+	],
+	"rangeStrategy": "update-lockfile",
+	"postUpdateOptions": ["npmDedupe", "yarnDedupeHighest"]
+}

.github/workflows/nodejs.yml

@@ -0,0 +1,29 @@
+name: Node CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    types:
+      - opened
+      - synchronize
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 21.x
+      - name: Install
+        run: |
+          npm ci
+      - name: Run ESLint
+        run: npm run lint
+      - name: Build
+        run: npm run build