add title to PR notification

Author: jmckenna

.github/workflows/irc_notify.yml

@@ -34,6 +34,7 @@ jobs:
           nickname: mapcache-github-notifier
           message: |
             ${{ github.actor }} opened PR ${{ github.event.pull_request.html_url }}
+            ${{ github.event.pull_request.title }}
       - name: irc tag created
         uses: rectalogic/notify-irc@v2
         if: github.event_name == 'create' && github.event.ref_type == 'tag'