ci: Add CI workflow for testing and building the project

.github/workflows/ci.yml

@@ -0,0 +1,33 @@
+name: CI
+on:
+  pull_request:
+    types: [opened, reopened, synchronize, ready_for_review]
+  workflow_dispatch:
+
+jobs:
+  vitest:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "lts/*"
+      - name: Install dependencies
+        run: npm ci
+      - name: Test
+        run: npm run test
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "lts/*"
+      - name: Install dependencies
+        run: npm ci
+      - name: Build
+        run: npm run build