tech: add check to verify Scalingo applications deployment

.github/workflows/check-scalingo-deployment.yaml

@@ -0,0 +1,15 @@
+name: Check Scalingo deployment
+on:
+  check_suite:
+    types: [completed]
+jobs:
+  check-api-deployment:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check api deployment
+        uses: MathieuGilet/test-functions/check-scalingo-deployment@main
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          repository: ${{ github.event.repository.full_name }}
+          application: "pix-api-review-pr"${{ github.event.pull_requests.number }}
+          sha: ${{ github.event.head_sha }}