feat: Add Github confirmation comment upon starting to deploy

Author: rameziophobia

.github/workflows/deploy-to-control-plane-review.yml

@@ -58,6 +58,18 @@ jobs:
           echo "APP_NAME=qa-react-webpack-rails-tutorial-pr-${{ env.PR_NUMBER }}" >> $GITHUB_ENV
           echo "App Name: ${{ env.APP_NAME }}"
 
+      - name: Add GitHub Comment
+        if: ${{ github.event_name == 'issue_comment' }}
+        uses: actions/github-script@v4
+        with:
+          script: |
+            github.rest.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: "We started working on your review-app deployment. You can track progress in the "Actions" Tab on Github."
+            })
+
       - uses: ./.github/actions/deploy-to-control-plane
         with:
           app_name: ${{ env.APP_NAME }}