ci: add GitHub Actions workflow for frontend deployment

.github/workflows/cd-web.yaml

@@ -0,0 +1,24 @@
+name: Deploy Frontend
+
+on:
+  push:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Install pnpm
+      uses: pnpm/action-setup@v4
+
+    - name: Use Node.js
+      uses: actions/setup-node@v4
+      with:
+        cache: 'pnpm'
+
+    - name: Install dependencies
+      run: pnpm install
+
+    - name: Build
+      run: pnpm run build