feat: 테스트 자동화 workflow 작성

.github/workflows/vitest.yml

@@ -0,0 +1,28 @@
+name: Test
+
+on:
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Use Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: '18'
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v2
+        with:
+          version: 9
+
+      - name: Install dependencies
+        run: pnpm install
+
+      - name: Run Vitest tests
+        run: pnpm run test