ci(test): add test scripts to GitHub Actions

.github/workflows/test.yml

@@ -0,0 +1,31 @@
+name: Run tests
+
+on:
+  push:
+    branches:
+      - main
+      - v2
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Test
+        run: npm run test:cov
+
+      - name: Upload coverage reports to Codecov
+        uses: codecov/[email protected]
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}