Added deploy preview app workflow (#328)

.github/workflows/preview-app.yaml

@@ -0,0 +1,29 @@
+name: Deploy Preview App
+
+on:
+  pull_request:
+
+jobs:
+  deploy-preview:
+    runs-on: ubuntu-latest
+    name: Deploy Preview App
+
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+
+      - name: Build dist
+        run: mv .env.sample .env && npm install && npm run build
+
+      - name: Deploy to Cloudflare Pages
+        id: deploy
+        uses: cloudflare/wrangler-action@v3
+        with:
+          apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          accountId: ${{ secrets.CF_ACCOUNT_ID }}
+          command: pages deploy dist --project-name=algokit-lora --branch=${{ github.head_ref }}
+
+      - name: Print URL
+        env:
+          DEPLOYMENT_ALIAS_URL: ${{ steps.deploy.outputs.pages-deployment-alias-url }}
+        run: echo $DEPLOYMENT_ALIAS_URL