CI: notify on pull-requests

.github/workflows/pullrequest.yml

@@ -0,0 +1,24 @@
+name: pullrequest
+
+on:
+  pull_request:
+    types: [opened, closed]
+
+jobs:
+  notify:
+    runs-on: ubuntu-latest
+    steps:
+      - name: "notify: new"
+        if: github.event.pull_request.action == 'opened'
+        uses: calamares/actions/matrix-notify@v4
+        with:
+          token: ${{ secrets.MATRIX_TOKEN }}
+          room: ${{ secrets.MATRIX_ROOM }}
+          message: "NEW PR ${{ github.event.pull_request.html_url }} by ${{ github.actor }} ${{ github.event.pull_request.title }}"
+      - name: "notify: closed"
+        if: github.event.pull_request.action == 'closed'
+        uses: calamares/actions/matrix-notify@v4
+        with:
+          token: ${{ secrets.MATRIX_TOKEN }}
+          room: ${{ secrets.MATRIX_ROOM }}
+          message: "CLOSED ${{ github.event.pull_request.html_url }} by ${{ github.actor }} ${{ github.event.pull_request.title }}"