ci: add GChat PR notification for Rokt Kit (#66)

Author: alexs-mparticle

.github/workflows/reusable-workflows.yml

@@ -15,4 +15,12 @@ jobs:
         uses: mParticle/mparticle-workflows/.github/workflows/pr-title-check.yml@stable
     pr-branch-target-gitflow:
         name: Check PR for semantic target branch
-        uses: mParticle/mparticle-workflows/.github/workflows/pr-branch-target-gitflow.yml@stable
+        uses: mParticle/mparticle-workflows/.github/workflows/pr-branch-target-gitflow.yml@stable
+    pr-notify:
+        if: github.event.pull_request.draft == false && (github.event.action == 'opened' || github.event.action == 'ready_for_review')
+        needs:
+            - web-kit-pull-request
+        name: Notify GChat
+        uses: ROKT/rokt-workflows/.github/workflows/oss_pr_opened_notification.yml@main
+        secrets:
+            gchat_webhook: ${{ secrets.GCHAT_PRS_WEBHOOK }}