build: Notify us in Slack when on-call tickets are made

.github/workflows/add-GHrequest-to-team-board.yml

@@ -54,4 +54,15 @@ jobs:
             -H "Authorization: token $GITHUB_TOKEN" \
             --data '{ "body": "Thank you for your report! @openedx/axim-oncall will triage within a business day. Simple requests usually take 2-3 business days to resolve; more complex requests could take longer." }'
 
+      - name:  Send custom JSON data to Slack workflow
+        id: slack
+        uses: slackapi/[email protected]
+        with:
+          # This data can be any valid JSON from a previous step in the GitHub Action
+          payload: |
+            {
+              "msg": "${{ github.event.issue.title }}\nAuthor: ${{ github.event.issue.user.login }}\nURL: https://www.github.com/openedx/axim-engineering/issues/${{ github.event.issue.number }}"
+            }
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}