Add GitHub Actions workflow for deploying SAM application

.github/workflows/deploy.yml

@@ -0,0 +1,53 @@
+name: Deploy SAM Application
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: "20"
+
+      - name: Install Esbuild Globally
+        run: npm install -g esbuild
+
+      - name: Install dependencies
+        run: npm install
+        working-directory: nodejs
+
+      - name: Run tests
+        run: npm test
+        working-directory: nodejs
+
+      - name: Set up AWS CLI
+        uses: aws-actions/configure-aws-credentials@v2
+        with:
+          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          aws-region: ${{ secrets.AWS_REGION }}
+
+      - name: Install AWS SAM CLI
+        run: pip install aws-sam-cli
+
+      - name: Build SAM application
+        run: sam build
+
+      - name: Deploy SAM application
+        run: |
+          sam deploy \
+            --no-confirm-changeset \
+            --no-fail-on-empty-changeset \
+            --resolve-s3 \
+            --stack-name invoicing-app-clients-microservice \
+            --capabilities CAPABILITY_IAM \
+            --parameter-overrides UserPoolId=${{ secrets.USER_POOL_ID }} UserPoolClientId=${{ secrets.USER_POOL_CLIENT_ID }} \