Add a CI workflow to run the app deployment test

.github/workflows/test-app-deployment.yaml

@@ -0,0 +1,27 @@
+name: Test webapp deployment flow
+
+on:
+  push:
+    branches:
+      - main
+  schedule:
+    - cron: '0 3 * * *'
+
+jobs:
+  test_app_deployment:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [20.x]
+    steps:
+      - uses: actions/checkout@v3
+      - name: 'Setup jq'
+        run: apt-get install jq -y
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: Install dependencies
+        run: yarn
+      - name: Test webapp deployment
+        run: ./packages/deployer/test/test-webapp-deployment.sh