chore: Add PR notification

Author: jamesnrokt

.github/workflows/pull-request.yml

@@ -5,4 +5,15 @@ jobs:
     name: "Pull Request Check"
     uses: mParticle/mparticle-workflows/.github/workflows/android-kit-pull-request.yml@main
     with:
-      branch_name: ${{ github.head_ref }}
+      branch_name: ${{ github.head_ref }}
+
+  pr-notify:
+    if: >
+      github.event_name == 'pull_request' &&
+      github.event.pull_request.draft == false
+    needs:
+      - pr-check
+    name: Notify GChat
+    uses: ROKT/rokt-workflows/.github/workflows/oss_pr_opened_notification.yml@main
+    secrets:
+      gchat_webhook: ${{ secrets.GCHAT_PRS_WEBHOOK }}