bot for pr notifications (facebook#31985)

Going to take some testing to get this right

Author: rickhanlonii

.github/workflows/discord_notify.yml

@@ -0,0 +1,22 @@
+name: Discord Notify
+
+on:
+  pull_request:
+    types: [ labeled ]
+    
+jobs:
+  notify:
+      if: ${{ github.event.label.name == 'React Core Team' }}
+      runs-on: ubuntu-latest
+      steps:
+        - name: Discord Webhook Action
+          uses: tsickert/[email protected]
+          with:
+              webhook-url: ${{ secrets.DISCORD_WEBHOOK_URL }}
+              embed-author-name: ${{ github.event.pull_request.user.login }}
+              embed-author-url: ${{ github.event.pull_request.user.html_url }}
+              embed-author-icon-url: ${{ github.event.pull_request.user.avatar_url }}
+              embed-title: '#${{ github.event.number }}: ${{ github.event.pull_request.title }}'
+              embed-description: ${{ github.event.pull_request.body }}
+              embed-url: ${{ github.event.pull_request.html_url }}
+